Remove .func and .endfunc assembler directives

These directives are only used when stabs debugging information
is used, but we use ELF which uses DWARF debugging information.
Clang assembler doesn't support these directives, and removing
them makes the code more compatible with clang.

Change-Id: I2803f22ebd24c0fe248e04ef1b17de9cec5f89c4
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

include/common/aarch64/asm_macros.S

@@ -83,7 +83,6 @@
 	.section \section_name, "ax"
 	.align 7, 0
 	.type \label, %function
-	.func \label
 	.cfi_startproc
 	\label:
 	.endm
@@ -95,7 +94,6 @@
 	 * vector entry as the parameter
 	 */
 	.macro check_vector_size since
-	  .endfunc
 	  .cfi_endproc
 	  .if (. - \since) > (32 * 4)
 	    .error "Vector exceeds 32 instructions"

include/common/asm_macros_common.S

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -31,7 +31,6 @@
 	.cfi_sections .debug_frame
 	.section .text.asm.\_name, "ax"
 	.type \_name, %function
-	.func \_name
 	/*
 	 * .cfi_startproc and .cfi_endproc are needed to output entries in
 	 * .debug_frame
@@ -45,7 +44,6 @@
 	 * This macro is used to mark the end of a function.
 	 */
 	.macro endfunc _name
-	.endfunc
 	.cfi_endproc
 	.size \_name, . - \_name
 	.endm

plat/rockchip/common/pmusram/pmu_sram_cpus_on.S

@@ -12,7 +12,6 @@
 	.macro pmusram_entry_func _name
 	.section .pmusram.entry, "ax"
 	.type \_name, %function
-	.func \_name
 	.cfi_startproc
 	\_name:
 	.endm

plat/rockchip/rk3399/drivers/pmu/plat_pmu_macros.S

@@ -15,7 +15,6 @@
 	.cfi_sections .debug_frame
 	.section .sram.text, "ax"
 	.type \_name, %function
-	.func \_name
 	.cfi_startproc
 	\_name:
 	.endm