rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/mips/cpu.c b/cpu/mips/cpu.c
index 0f58d25..38d8697 100644
--- a/cpu/mips/cpu.c
+++ b/cpu/mips/cpu.c
@@ -51,7 +51,7 @@
 
 void flush_cache(ulong start_addr, ulong size)
 {
-	unsigned long lsize = CFG_CACHELINE_SIZE;
+	unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
 	unsigned long addr = start_addr & ~(lsize - 1);
 	unsigned long aend = (start_addr + size - 1) & ~(lsize - 1);