[PATCH 04/17] xen/arm: address violations of MISRA C:2012 Directive 4.10

[Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx>]

From: Simone Ballarin <simone.ballarin@xxxxxxxxxxx>

Add inclusion guard to address violations of
MISRA C:2012 Directive 4.10 ("Precautions shall be taken in order
to prevent the contents of a header file being included more than
once").

Mechanical change.

Signed-off-by: Simone Ballarin <simone.ballarin@xxxxxxxxxxx>
Signed-off-by: Maria Celeste Cesario <maria.celeste.cesario@xxxxxxxxxxx>
Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
Signed-off-by: Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx>

---
Changes in v4:
- Drop ARCH_ string from the guard, according to the feedback received
Changes in v3:
- remove trailing underscores
- change inclusion guard name to adhere to the new standard
Changes in v2:
- drop changes in xen/arch/arm/include/asm/hypercall.h
- drop changes in xen/arch/arm/include/asm/iocap.h since they are
  not related with the directive
---
 xen/arch/arm/efi/efi-boot.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/arch/arm/efi/efi-boot.h b/xen/arch/arm/efi/efi-boot.h
index 199f526022..947166905f 100644
--- a/xen/arch/arm/efi/efi-boot.h
+++ b/xen/arch/arm/efi/efi-boot.h
@@ -3,6 +3,10 @@
  * is intended to be included by common/efi/boot.c _only_, and
  * therefore can define arch specific global variables.
  */
+
+#ifndef ARM_EFI_EFI_BOOT_H
+#define ARM_EFI_EFI_BOOT_H
+
 #include <xen/device_tree.h>
 #include <xen/libfdt/libfdt.h>
 #include <asm/setup.h>
@@ -992,6 +996,8 @@ static void __init efi_arch_flush_dcache_area(const void 
*vaddr, UINTN size)
     __flush_dcache_area(vaddr, size);
 }
 
+#endif /* ARM_EFI_EFI_BOOT_H */
+
 /*
  * Local variables:
  * mode: C
-- 
2.34.1