spl: Kconfig: Drop the _SUPPORT postfix from SPL_DFU

The symbol CONFIG_SPL_DFU_SUPPORT in SPL build has the same
meaning as CONFIG_DFU in regular U-Boot. Drop the _SUPPORT
to allow for cleaner use in code.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index d175bb6..aa24b66 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -794,7 +794,7 @@
 	  since the network stack uses a number of environment variables.
 	  See also SPL_NET_SUPPORT and SPL_ETH_SUPPORT.
 
-config SPL_DFU_SUPPORT
+config SPL_DFU
 	bool "Support DFU (Device Firmware Upgrade)"
 	select SPL_HASH_SUPPORT
 	select SPL_DFU_NO_RESET
@@ -809,11 +809,11 @@
 
 choice
 	bool "DFU device selection"
-	depends on SPL_DFU_SUPPORT
+	depends on SPL_DFU
 
 config SPL_DFU_RAM
 	bool "RAM device"
-	depends on SPL_DFU_SUPPORT && SPL_RAM_SUPPORT
+	depends on SPL_DFU && SPL_RAM_SUPPORT
 	help
 	 select RAM/DDR memory device for loading binary images
 	 (u-boot/kernel) to the selected device partition using