Code cleanup: fix old style assignment ambiguities like "=-" etc.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/common/flash.c b/common/flash.c
index 888ff9c..fe39d55 100644
--- a/common/flash.c
+++ b/common/flash.c
@@ -104,7 +104,7 @@
 	flash_info_t *info;
 	int i;
 
-	for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
+	for (i=0, info = &flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
 		if (info->flash_id != FLASH_UNKNOWN &&
 		    addr >= info->start[0] &&
 		    /* WARNING - The '- 1' is needed if the flash