xen/arm: Only include stringify.h when necessary

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Andrii Anisov <andrii_anisov@epam.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>

xen/include/asm-arm/arm32/sysregs.h

@@ -1,6 +1,7 @@
 #ifndef __ASM_ARM_ARM32_SYSREGS_H
 #define __ASM_ARM_ARM32_SYSREGS_H
 
+#include <xen/stringify.h>
 #include <asm/cpregs.h>
 
 /* Layout as used in assembly, with src/dest registers mixed in */

xen/include/asm-arm/arm64/processor.h

@@ -1,8 +1,6 @@
 #ifndef __ASM_ARM_ARM64_PROCESSOR_H
 #define __ASM_ARM_ARM64_PROCESSOR_H
 
-#include <xen/stringify.h>
-
 #ifndef __ASSEMBLY__
 
 /* Anonymous union includes both 32- and 64-bit names (e.g., r0/x0). */

xen/include/asm-arm/cpregs.h

@@ -1,8 +1,6 @@
 #ifndef __ASM_ARM_CPREGS_H
 #define __ASM_ARM_CPREGS_H
 
-#include <xen/stringify.h>
-
 /*
  * AArch32 Co-processor registers.
  *