arm: crt0.S: Remove bogus .globl

The purpose of .globl is to export symbols for ld, not to declare external
symbols.

By the way, use the ENTRY() and ENDPROC() macros to define functions rather than
using .global directly.
Signed-off-by: NBenoît Thébaudeau <benoit.thebaudeau@advansee.com>

arch/arm/lib/crt0.S

@@ -24,6 +24,7 @@
 
 #include <config.h>
 #include <asm-offsets.h>
+#include <linux/linkage.h>
 
 /*
  * This file handles the target-independent stages of the U-Boot
@@ -66,34 +67,11 @@
  * 6. Branch to either nand_boot() or board_init_r().
  */
 
-/*
- * declare nand_boot() or board_init_r() to jump to at end of crt0
- */
-
-#if defined(CONFIG_NAND_SPL)
-
-.globl nand_boot
-
-#elif ! defined(CONFIG_SPL_BUILD)
-
-.globl board_init_r
-
-#endif
-
-/*
- * start and end of BSS
- */
-
-.globl __bss_start
-.globl __bss_end
-
 /*
  * entry point of crt0 sequence
  */
 
-.global _main
-
-_main:
+ENTRY(_main)
 
 /*
  * Set up initial C runtime environment and call board_init_f(0).
@@ -171,3 +149,5 @@ clbss_l:cmp	r0, r1			/* while not at end of BSS */
 	/* we should not return here. */
 
 #endif
+
+ENDPROC(_main)