Xtensa port: Removed the need to put an empy file soc.c in arch/xtensa/soc dir.

Change-Id: I439a6c36f10c6255d15a688c8f425de0fab93912
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>

arch/xtensa/soc/D_108mini/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/D_212GP/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/D_233L/Makefile

@@ -1,3 +1,3 @@
-obj-y = soc.o
+obj- = soc.o
 
 QEMU_CPU_TYPE_xtensa = dc233c

arch/xtensa/soc/XRC_D2PM/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/XRC_D2PM_5swIrq/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/XRC_FUSION_AON_ALL_LM/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/hifi2_std/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/hifi3_bd5/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/hifi3_bd5_call0/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/hifi4_bd7/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/hifi_mini/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o

arch/xtensa/soc/hifi_mini_4swIrq/Makefile

@@ -1 +1 @@
-obj-y = soc.o
+obj- = soc.o