i386: Change inline asm global symbols to local

gcc 4.3.2 optimiser creates multiple copies of inline asm (who knows why)
Remove use of global names for labels to prevent 'symbol already defined'
errors

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>

board/eNET/eNET.c

@@ -51,9 +51,9 @@ void init_sc520_enet (void)
 
 	/* wait at least one millisecond */
 	asm("movl	$0x2000,%%ecx\n"
-	    "wait_loop:	pushl %%ecx\n"
+	    "0:	pushl %%ecx\n"
 	    "popl	%%ecx\n"
-	    "loop wait_loop\n": : : "ecx");
+	    "loop 0b\n": : : "ecx");
 
 	/* turn on the SDRAM write buffer */
 	write_mmcr_byte(SC520_DBCTL, 0x11);

cpu/i386/sc520/sc520.c

@@ -109,9 +109,9 @@ void init_sc520(void)
 
 	/* wait at least one millisecond */
 	asm("movl	$0x2000,%%ecx\n"
-	    "wait_loop:	pushl %%ecx\n"
+	    "0:		pushl %%ecx\n"
 	    "popl	%%ecx\n"
-	    "loop wait_loop\n": : : "ecx");
+	    "loop 0b\n": : : "ecx");
 
 	/* turn on the SDRAM write buffer */
 	write_mmcr_byte(SC520_DBCTL, 0x11);