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

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/evb64260/mpsc.c b/board/evb64260/mpsc.c
index 9e8bfe0..3b338c7 100644
--- a/board/evb64260/mpsc.c
+++ b/board/evb64260/mpsc.c
@@ -259,7 +259,7 @@
 int
 mpsc_test_char(void)
 {
-	volatile unsigned int *p=&rx_desc_base[rx_desc_index*8];
+	volatile unsigned int *p = &rx_desc_base[rx_desc_index*8];
 
 	INVALIDATE_DCACHE(&p[1], &p[2]);