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

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/esd/cpci750/sdram_init.c b/board/esd/cpci750/sdram_init.c
index a479f0f..0291937 100644
--- a/board/esd/cpci750/sdram_init.c
+++ b/board/esd/cpci750/sdram_init.c
@@ -1570,8 +1570,8 @@
     for (cnt = STARTVAL/sizeof(long); cnt < maxsize/sizeof(long); cnt <<= 1) {
 	    addr = base + cnt;	/* pointer arith! */
 
-	    save1=*addr;		/* save contents of addr */
-	    save2=*b;		/* save contents of base */
+	    save1 = *addr;		/* save contents of addr */
+	    save2 = *b;		/* save contents of base */
 
 	    *addr=cnt;		/* write cnt to addr */
 	    *b=0;			/* put null at base */