arm: Move bsp/CortexM to core/cortex_m

Eliminates bsp directory as part of transforming BSPs to platforms.

Change-Id: I8b5366bf32797ddbb1bfa3520ddfeed6344cec2f
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>

arch/arm/Kconfig

@@ -91,7 +91,7 @@ endchoice
 
 endmenu
 
-source "arch/arm/bsp/CortexM/Kconfig"
+source "arch/arm/core/cortex_m/Kconfig"
 
 if PLATFORM_TI_LM3S6965
 source "arch/arm/platforms/ti_lm3s6965/Kconfig"

arch/arm/Makefile

@@ -1,5 +1,4 @@
 obj-y = core/
-obj-y += bsp/
 
 obj-$(CONFIG_PLATFORM_FSL_FRDM_K64F) += platforms/fsl_frdm_k64f/
 obj-$(CONFIG_PLATFORM_TI_LM3S6965) += platforms/ti_lm3s6965/

arch/arm/bsp/Makefile

@@ -1 +0,0 @@
-obj-y = CortexM/

arch/arm/core/Makefile

@@ -11,3 +11,5 @@ obj-y = atomic.o exc_exit.o ffs.o irq_init.o \
 	fatal.o sys_fatal_error_handler.o
 
 obj-$(CONFIG_MICROKERNEL) += task_abort.o
+
+obj-$(CONFIG_CPU_CORTEX_M) += cortex_m/