global: Migrate CONFIG_DFU_ALT et al to CFG

Perform simple renames of:
   CONFIG_DFU_ALT to CFG_DFU_ALT
   CONFIG_DFU_ALT_BOOT_EMMC to CFG_DFU_ALT_BOOT_EMMC
   CONFIG_DFU_ALT_BOOT_SD to CFG_DFU_ALT_BOOT_SD
   CONFIG_DFU_ALT_SYSTEM to CFG_DFU_ALT_SYSTEM
   CONFIG_DFU_ENV_SETTINGS to CFG_DFU_ENV_SETTINGS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/trats2.h b/include/configs/trats2.h
index 4d39b40..18fca09 100644
--- a/include/configs/trats2.h
+++ b/include/configs/trats2.h
@@ -40,7 +40,7 @@
 	"name="PARTS_DATA",size=3000MiB,uuid=${uuid_gpt_"PARTS_DATA"};" \
 	"name="PARTS_UMS",size=-,uuid=${uuid_gpt_"PARTS_UMS"}\0" \
 
-#define CONFIG_DFU_ALT \
+#define CFG_DFU_ALT \
 	"u-boot raw 0x80 0x800;" \
 	"/uImage ext4 0 2;" \
 	"/modem.bin ext4 0 2;" \
@@ -86,7 +86,7 @@
 	"mmcrootpart=5\0" \
 	"opts=always_resume=1\0" \
 	"partitions=" PARTS_DEFAULT \
-	"dfu_alt_info=" CONFIG_DFU_ALT \
+	"dfu_alt_info=" CFG_DFU_ALT \
 	"uartpath=ap\0" \
 	"usbpath=ap\0" \
 	"consoleon=set console console=ttySAC2,115200n8; save; reset\0" \