cam5200_niosflash: fix build warnings

Fix warnings:

cam5200_flash.c: In function 'write_word_32':
cam5200_flash.c:443: warning: dereferencing type-punned pointer will break strict-aliasing rules
cam5200_flash.c: In function 'write_word_16':
cam5200_flash.c:684: warning: dereferencing type-punned pointer will break strict-aliasing rules

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Stefan Roese <sr@denx.de>

board/tqc/tqm5200/cam5200_flash.c

@@ -440,7 +440,9 @@ static int write_word(flash_info_t * info, ulong dest, ulong data)
 {
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
-	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
+	ulong *datap = &data;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 =
+			(volatile CONFIG_SYS_FLASH_WORD_SIZE *)datap;
 	ulong start;
 	int i, flag;
 
@@ -681,7 +683,9 @@ static int write_word_16(flash_info_t * info, ulong dest, ulong data)
 {
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 	volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
-	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
+	ulong *datap = &data;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 =
+			(volatile CONFIG_SYS_FLASH_WORD_SIZE *)datap;
 	ulong start;
 	int i;