Rename GPIO_SUPPORT to GPIO

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/omap3_logic_defconfig b/configs/omap3_logic_defconfig
index b3f7638..e61347a 100644
--- a/configs/omap3_logic_defconfig
+++ b/configs/omap3_logic_defconfig
@@ -4,7 +4,7 @@
 CONFIG_ARCH_OMAP2PLUS=y
 CONFIG_SYS_TEXT_BASE=0x80100000
 CONFIG_TI_COMMON_CMD_OPTIONS=y
-# CONFIG_SPL_GPIO_SUPPORT is not set
+# CONFIG_SPL_GPIO is not set
 CONFIG_SYS_MALLOC_F_LEN=0x3000
 CONFIG_NR_DRAM_BANKS=2
 CONFIG_DEFAULT_DEVICE_TREE="logicpd-torpedo-37xx-devkit"