gpio: fix incorrect depends on for SPL_GPIO_HOG

Since commit 83061dbd1c89 ("Rename GPIO_SUPPORT to GPIO"),
SPL_GPIO_SUPPORT has been renamed to SPL_GPIO, meaning that SPL_GPIO_HOG
can never be enabled.

Let's fix this by using the proper name for the Kconfig option.

Fixes: 1d99e673c752 ("gpio: Enable hogging support in SPL")
Cc: Quentin Schulz <foss+uboot@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 82a8bca..7e4c357 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -70,7 +70,7 @@
 
 config SPL_GPIO_HOG
 	bool "Enable GPIO hog support in SPL"
-	depends on SPL_GPIO_SUPPORT
+	depends on SPL_GPIO
 	help
 	  Enable gpio hog support in SPL
 	  The GPIO chip may contain GPIO hog definitions. GPIO hogging