arm: armv7m: clean up armv7m unified code compilation

unified syntax should be selected by config ARM_ASM_UNIFIED
Signed-off-by: NVikas Manocha <vikas.manocha@st.com>

arch/arm/include/asm/armv7m.h

@@ -10,11 +10,6 @@
 #ifndef ARMV7M_H
 #define ARMV7M_H
 
-#if defined(__ASSEMBLY__)
-.syntax unified
-.thumb
-#endif
-
 /* armv7m fixed base addresses */
 #define V7M_SCS_BASE		0xE000E000
 #define V7M_NVIC_BASE		(V7M_SCS_BASE + 0x0100)

arch/arm/lib/crt0.S

@@ -8,9 +8,7 @@
 #include <config.h>
 #include <asm-offsets.h>
 #include <linux/linkage.h>
-#ifdef CONFIG_CPU_V7M
-#include <asm/armv7m.h>
-#endif
+#include <asm/assembler.h>
 
 /*
  * This file handles the target-independent stages of the U-Boot

arch/arm/lib/relocate.S

@@ -6,6 +6,7 @@
  */
 
 #include <asm-offsets.h>
+#include <asm/assembler.h>
 #include <config.h>
 #include <elf.h>
 #include <linux/linkage.h>

arch/arm/lib/vectors_m.S

@@ -5,7 +5,7 @@
  */
 
 #include <config.h>
-#include <asm/armv7m.h>
+#include <asm/assembler.h>
 #include <linux/linkage.h>
 
 .type __hard_fault_entry, %function