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/plat/layerscape/common/include/fsl_csu.h b/plat/layerscape/common/include/fsl_csu.h
index 680911e..5cc88b1 100644
--- a/plat/layerscape/common/include/fsl_csu.h
+++ b/plat/layerscape/common/include/fsl_csu.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __FSL_CSU_H__
-#define __FSL_CSU_H__
+#ifndef FSL_CSU_H
+#define FSL_CSU_H
 
 enum csu_cslx_access {
 	CSU_NS_SUP_R = 0x08,
@@ -30,4 +30,4 @@
 
 void enable_layerscape_ns_access(void);
 
-#endif
+#endif /* FSL_CSU_H */
diff --git a/plat/layerscape/common/include/ls_16550.h b/plat/layerscape/common/include/ls_16550.h
index 8daafbb..94694ee 100644
--- a/plat/layerscape/common/include/ls_16550.h
+++ b/plat/layerscape/common/include/ls_16550.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __LS_16550_H__
-#define __LS_16550_H__
+#ifndef LS_16550_H
+#define LS_16550_H
 
 #include <console.h>
 
@@ -83,4 +83,4 @@
 
 #endif /*__ASSEMBLY__*/
 
-#endif	/* __LS_16550_H__ */
+#endif /* LS_16550_H */
diff --git a/plat/layerscape/common/include/plat_ls.h b/plat/layerscape/common/include/plat_ls.h
index 05b9c05..49526ca 100644
--- a/plat/layerscape/common/include/plat_ls.h
+++ b/plat/layerscape/common/include/plat_ls.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __PLAT_LS_H__
-#define __PLAT_LS_H__
+#ifndef PLAT_LS_H
+#define PLAT_LS_H
 
 #include <cpu_data.h>
 #include <stdint.h>
@@ -58,4 +58,4 @@
 /* others */
 unsigned int plat_ls_get_cluster_core_count(u_register_t mpidr);
 
-#endif /* __PLAT_LS_H__ */
+#endif /* PLAT_LS_H */
diff --git a/plat/layerscape/common/include/soc.h b/plat/layerscape/common/include/soc.h
index 72c10cf..76c3418 100644
--- a/plat/layerscape/common/include/soc.h
+++ b/plat/layerscape/common/include/soc.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __LAYERSCAPE_SOC_H__
-#define __LAYERSCAPE_SOC_H__
+#ifndef SOC_H
+#define SOC_H
 
 #include <stdint.h>
 
@@ -15,4 +15,4 @@
 
 void get_gic_offset(uint32_t *gicc_base, uint32_t *gicd_base);
 
-#endif /* __LAYERSCAPE_SOC_H__ */
+#endif /* SOC_H */
diff --git a/plat/layerscape/common/include/tzc380.h b/plat/layerscape/common/include/tzc380.h
index 788c0ed..88063a9 100644
--- a/plat/layerscape/common/include/tzc380.h
+++ b/plat/layerscape/common/include/tzc380.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __TZC380_H__
-#define __TZC380_H__
+#ifndef TZC380_H
+#define TZC380_H
 
 struct tzc380_reg {
 	unsigned int secure;
@@ -16,4 +16,4 @@
 	unsigned int sub_mask;
 };
 
-#endif /* __TZC380_H__ */
+#endif /* TZC380_H */
diff --git a/plat/layerscape/common/tsp/platform_tsp.h b/plat/layerscape/common/tsp/platform_tsp.h
index b1c96cb..260f66a 100644
--- a/plat/layerscape/common/tsp/platform_tsp.h
+++ b/plat/layerscape/common/tsp/platform_tsp.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __PLATFORM_TSP_H__
-#define __PLATFORM_TSP_H__
+#ifndef PLATFORM_TSP_H
+#define PLATFORM_TSP_H
 
 /*******************************************************************************
  * Mandatory TSP functions (only if platform contains a TSP)
@@ -14,4 +14,4 @@
 void tsp_plat_arch_setup(void);
 void tsp_platform_setup(void);
 
-#endif /* __PLATFORM_TSP_H__ */
+#endif /* PLATFORM_TSP_H */