unified: rename sched.h to ksched.h

Build breaks when enabling CONFIG_NEWLIB_LIBC because it has its own
sched.h file.

This is a bad symptom of a greater issue: the build system passes many
'-I<path>' options to the compiler, and that allows including header
files by simply specifying their names (when located somewhere else than
<zephyr>/include/) and can cause clashes when several files in different
locations have the same name, like in this case.

Fixes ZEP-1062.

Change-Id: I81d1d69ee6669a609cd0c420b1b8f870d17dcb67
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>

arch/arm/core/thread_abort.c

@@ -30,7 +30,7 @@
 #include <nano_private.h>
 #include <toolchain.h>
 #include <sections.h>
-#include <sched.h>
+#include <ksched.h>
 #include <wait_q.h>
 
 extern void _k_thread_single_abort(struct tcs *thread);

kernel/unified/fifo.c

@@ -27,7 +27,7 @@
 #include <toolchain.h>
 #include <sections.h>
 #include <wait_q.h>
-#include <sched.h>
+#include <ksched.h>
 #include <misc/slist.h>
 
 void k_fifo_init(struct k_fifo *fifo)

kernel/unified/include/ksched.h

@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef _sched__h_
-#define _sched__h_
+#ifndef _ksched__h_
+#define _ksched__h_
 
 #include <kernel.h>
 #include <nano_private.h>
@@ -336,4 +336,4 @@ static inline void _unpend_thread(struct k_thread *thread)
 	_mark_thread_as_not_pending(thread);
 }
 
-#endif /* _sched__h_ */
+#endif /* _ksched__h_ */

kernel/unified/include/wait_q.h

@@ -23,7 +23,7 @@
 
 #ifdef CONFIG_KERNEL_V2
 #include <misc/dlist.h>
-#include <sched.h>
+#include <ksched.h>
 #endif
 
 #ifdef __cplusplus

kernel/unified/init.c

@@ -31,7 +31,7 @@
 #include <device.h>
 #include <init.h>
 #include <linker-defs.h>
-#include <sched.h>
+#include <ksched.h>
 
 /* kernel build timestamp items */
 

kernel/unified/lifo.c

@@ -25,7 +25,7 @@
 #include <toolchain.h>
 #include <sections.h>
 #include <wait_q.h>
-#include <sched.h>
+#include <ksched.h>
 
 void k_lifo_init(struct k_lifo *lifo)
 {

kernel/unified/mem_map.c

@@ -21,7 +21,7 @@
 #include <sections.h>
 #include <wait_q.h>
 #include <misc/dlist.h>
-#include <sched.h>
+#include <ksched.h>
 #include <init.h>
 
 extern struct k_mem_map _k_mem_map_ptr_start[];

kernel/unified/mem_pool.c

@@ -21,7 +21,7 @@
 #include <kernel.h>
 #include <nano_private.h>
 #include <misc/debug/object_tracing_common.h>
-#include <sched.h>
+#include <ksched.h>
 #include <wait_q.h>
 #include <init.h>
 

kernel/unified/offload.c

@@ -23,7 +23,7 @@
 
 #include <kernel.h>
 #include <nano_private.h>
-#include <sched.h>
+#include <ksched.h>
 #include <init.h>
 
 struct offload_work {

kernel/unified/sched.c

@@ -17,7 +17,7 @@
 #include <kernel.h>
 #include <nano_private.h>
 #include <atomic.h>
-#include <sched.h>
+#include <ksched.h>
 #include <wait_q.h>
 
 /* set the bit corresponding to prio in ready q bitmap */

kernel/unified/sem.c

@@ -33,7 +33,7 @@
 #include <sections.h>
 #include <wait_q.h>
 #include <misc/dlist.h>
-#include <sched.h>
+#include <ksched.h>
 
 #ifdef CONFIG_SEMAPHORE_GROUPS
 struct _sem_desc {

kernel/unified/stack.c

@@ -23,7 +23,7 @@
 #include <misc/debug/object_tracing_common.h>
 #include <toolchain.h>
 #include <sections.h>
-#include <sched.h>
+#include <ksched.h>
 #include <wait_q.h>
 #include <misc/__assert.h>
 

kernel/unified/thread.c

@@ -31,7 +31,7 @@
 #include <misc/printk.h>
 #include <sys_clock.h>
 #include <drivers/system_timer.h>
-#include <sched.h>
+#include <ksched.h>
 #include <wait_q.h>
 
 extern struct _static_thread_data _k_task_list_start[];

kernel/unified/thread_abort.c

@@ -27,7 +27,7 @@
 #include <toolchain.h>
 #include <sections.h>
 #include <wait_q.h>
-#include <sched.h>
+#include <ksched.h>
 
 extern void _k_thread_single_abort(struct k_thread *thread);
 

kernel/unified/timer.c

@@ -17,7 +17,7 @@
 #include <nano_private.h>
 #include <misc/debug/object_tracing_common.h>
 #include <wait_q.h>
-#include <sched.h>
+#include <ksched.h>
 #include <init.h>
 
 /**