MIPS: fix annotation of _start and relocate_code

Correctly annotate _start and relocate_code as functions to
produce more readable disassembly code generated by objdump.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

arch/mips/cpu/start.S

@@ -56,9 +56,7 @@
 
 	.set noreorder
 
-	.globl _start
-	.text
-_start:
+ENTRY(_start)
 	/* U-boot entry point */
 	b	reset
 	 nop
@@ -192,6 +190,8 @@ reset:
 	jr	t9
 	 move	ra, zero
 
+	END(_start)
+
 /*
  * void relocate_code (addr_sp, gd, addr_moni)
  *
@@ -202,9 +202,7 @@ reset:
  * a1 = gd
  * a2 = destination address
  */
-	.globl	relocate_code
-	.ent	relocate_code
-relocate_code:
+ENTRY(relocate_code)
 	move	sp, a0			# set new stack pointer
 	move	fp, sp
 
@@ -317,4 +315,4 @@ in_ram:
 	jr	t9
 	 move	ra, zero
 
-	.end	relocate_code
+	END(relocate_code)

arch/mips/include/asm/asm.h

@@ -45,6 +45,12 @@
 #define CPLOAD(register)
 #endif
 
+#define ENTRY(symbol)                                   \
+		.globl	symbol;                         \
+		.type	symbol, @function;              \
+		.ent	symbol, 0;                      \
+symbol:
+
 /*
  * LEAF - declare leaf routine
  */