board/amcc/common/flash.c: Fix GCC 4.6 build warning

Fix:
In file included from flash.c:45:0:
../common/flash.c: In function 'flash_erase':
../common/flash.c:399:24: warning: variable 'l_sect' set but not used
[-Wunused-but-set-variable]
Signed-off-by: NWolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Acked-by: NStefan Roese <sr@denx.de>

board/amcc/common/flash.c

@@ -396,7 +396,7 @@ int flash_erase(flash_info_t * info, int s_first, int s_last)
 {
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
-	int flag, prot, sect, l_sect;
+	int flag, prot, sect;
 	int i;
 
 	if ((s_first < 0) || (s_first > s_last)) {
@@ -427,8 +427,6 @@ int flash_erase(flash_info_t * info, int s_first, int s_last)
 		printf("\n");
 	}
 
-	l_sect = -1;
-
 	/* Disable interrupts which might cause a timeout here */
 	flag = disable_interrupts();
 
@@ -454,7 +452,6 @@ int flash_erase(flash_info_t * info, int s_first, int s_last)
 				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;	/* sector erase */
 			}
-			l_sect = sect;
 			/*
 			 * Wait for each sector to complete, it's more
 			 * reliable.  According to AMD Spec, you must
@@ -825,7 +822,7 @@ static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 {
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
-	int flag, prot, sect, l_sect;
+	int flag, prot, sect;
 	int i;
 
 	if ((s_first < 0) || (s_first > s_last)) {
@@ -856,8 +853,6 @@ static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 		printf("\n");
 	}
 
-	l_sect = -1;
-
 	/* Disable interrupts which might cause a timeout here */
 	flag = disable_interrupts();
 
@@ -883,7 +878,6 @@ static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;	/* sector erase */
 			}
-			l_sect = sect;
 			/*
 			 * Wait for each sector to complete, it's more
 			 * reliable.  According to AMD Spec, you must