Standardise header guards across codebase

All identifiers, regardless of use, that start with two underscores are
reserved. This means they can't be used in header guards.

The style that this project is now to use the full name of the file in
capital letters followed by 'H'. For example, for a file called
"uart_example.h", the header guard is UART_EXAMPLE_H.

The exceptions are files that are imported from other projects:

- CryptoCell driver
- dt-bindings folders
- zlib headers

Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/include/plat/marvell/a3700/common/armada_common.h b/include/plat/marvell/a3700/common/armada_common.h
index 9fc4634..fdcc02a 100644
--- a/include/plat/marvell/a3700/common/armada_common.h
+++ b/include/plat/marvell/a3700/common/armada_common.h
@@ -5,12 +5,12 @@
  * https://spdx.org/licenses
  */
 
-#ifndef __ARMADA_COMMON_H__
-#define __ARMADA_COMMON_H__
+#ifndef ARMADA_COMMON_H
+#define ARMADA_COMMON_H
 
 #include <io_addr_dec.h>
 #include <stdint.h>
 
 int marvell_get_io_dec_win_conf(struct dec_win_config **win, uint32_t *size);
 
-#endif /* __ARMADA_COMMON_H__ */
+#endif /* ARMADA_COMMON_H */
diff --git a/include/plat/marvell/a3700/common/board_marvell_def.h b/include/plat/marvell/a3700/common/board_marvell_def.h
index 49a1a5c..1782596 100644
--- a/include/plat/marvell/a3700/common/board_marvell_def.h
+++ b/include/plat/marvell/a3700/common/board_marvell_def.h
@@ -5,8 +5,8 @@
  * https://spdx.org/licenses
  */
 
-#ifndef __BOARD_MARVELL_DEF_H__
-#define __BOARD_MARVELL_DEF_H__
+#ifndef BOARD_MARVELL_DEF_H
+#define BOARD_MARVELL_DEF_H
 
 /*
  * Required platform porting definitions common to all ARM
@@ -73,5 +73,4 @@
 
 #define PLAT_MARVELL_TRUSTED_SRAM_SIZE	0x80000	/* 512 KB */
 
-
-#endif /* __BOARD_MARVELL_DEF_H__ */
+#endif /* BOARD_MARVELL_DEF_H */
diff --git a/include/plat/marvell/a3700/common/marvell_def.h b/include/plat/marvell/a3700/common/marvell_def.h
index 6c3a524..3c105fc 100644
--- a/include/plat/marvell/a3700/common/marvell_def.h
+++ b/include/plat/marvell/a3700/common/marvell_def.h
@@ -5,8 +5,8 @@
  * https://spdx.org/licenses
  */
 
-#ifndef __MARVELL_DEF_H__
-#define __MARVELL_DEF_H__
+#ifndef MARVELL_DEF_H
+#define MARVELL_DEF_H
 
 #include <arch.h>
 #include <common_def.h>
@@ -174,4 +174,4 @@
 					 MARVELL_BL_RAM_SIZE)
 
 
-#endif /* __MARVELL_DEF_H__ */
+#endif /* MARVELL_DEF_H */
diff --git a/include/plat/marvell/a3700/common/plat_marvell.h b/include/plat/marvell/a3700/common/plat_marvell.h
index f733d04..8c289e9 100644
--- a/include/plat/marvell/a3700/common/plat_marvell.h
+++ b/include/plat/marvell/a3700/common/plat_marvell.h
@@ -5,8 +5,8 @@
  * https://spdx.org/licenses
  */
 
-#ifndef __PLAT_MARVELL_H__
-#define __PLAT_MARVELL_H__
+#ifndef PLAT_MARVELL_H
+#define PLAT_MARVELL_H
 
 #include <bl_common.h>
 #include <cassert.h>
@@ -93,4 +93,4 @@
 
 const mmap_region_t *plat_marvell_get_mmap(void);
 
-#endif /* __PLAT_MARVELL_H__ */
+#endif /* PLAT_MARVELL_H */