rockchip: jerry: Drop unused options

To reduce the SPL image size, drop the LED features. Jerry does not have
an LED and we can leave out GPIO support also.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/chromebook_jerry.h b/include/configs/chromebook_jerry.h
index e29d776..78c06af 100644
--- a/include/configs/chromebook_jerry.h
+++ b/include/configs/chromebook_jerry.h
@@ -15,4 +15,6 @@
 #define CONFIG_SPL_SPI_LOAD
 #define CONFIG_SPI_FLASH_GIGADEVICE
 
+#undef CONFIG_SPL_GPIO_SUPPORT
+
 #endif