global: Migrate CONFIG_MAX_MEM_MAPPED to CFG

Perform a simple rename of CONFIG_MAX_MEM_MAPPED to CFG_MAX_MEM_MAPPED

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/rcar-gen3-common.h b/include/configs/rcar-gen3-common.h
index 8e0837a..213caa7 100644
--- a/include/configs/rcar-gen3-common.h
+++ b/include/configs/rcar-gen3-common.h
@@ -28,7 +28,7 @@
 #define DRAM_RSV_SIZE			0x08000000
 #define CFG_SYS_SDRAM_BASE		(0x40000000 + DRAM_RSV_SIZE)
 #define CFG_SYS_SDRAM_SIZE		(0x80000000u - DRAM_RSV_SIZE)
-#define CONFIG_MAX_MEM_MAPPED		(0x80000000u - DRAM_RSV_SIZE)
+#define CFG_MAX_MEM_MAPPED		(0x80000000u - DRAM_RSV_SIZE)
 
 /* ENV setting */