Rename SPL_USB_HOST_SUPPORT to SPL_USB_HOST

Rename this option so that CONFIG_IS_ENABLED can be used with it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/ge_b1x5v2_defconfig b/configs/ge_b1x5v2_defconfig
index d3a628c..b07be0b1 100644
--- a/configs/ge_b1x5v2_defconfig
+++ b/configs/ge_b1x5v2_defconfig
@@ -37,7 +37,7 @@
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_MISC_INIT_R=y
 CONFIG_SPL_SPI_LOAD=y
-CONFIG_SPL_USB_HOST_SUPPORT=y
+CONFIG_SPL_USB_HOST=y
 CONFIG_SPL_USB_GADGET=y
 CONFIG_SPL_USB_SDP_SUPPORT=y
 CONFIG_HUSH_PARSER=y