x86: minnowmax: Drop screen resolution to 1024x768

This seems like a more reasonable resolution for this board, since it is
quite slow. It also allows it to work with a 5" LCD display in my lab.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/minnowmax_defconfig b/configs/minnowmax_defconfig
index 4fbc920..13d6edd 100644
--- a/configs/minnowmax_defconfig
+++ b/configs/minnowmax_defconfig
@@ -61,5 +61,5 @@
 CONFIG_USB_KEYBOARD=y
 CONFIG_VIDEO_COPY=y
 CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
-CONFIG_FRAMEBUFFER_VESA_MODE_11B=y
+CONFIG_FRAMEBUFFER_VESA_MODE_118=y
 # CONFIG_GZIP is not set