vga: Fix Kconfig indentation

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
$ sed -e 's/^ /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Daniel Vetter <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/vga/Kconfig

···
 	help
 	  Many laptops released in 2008/9/10 have two GPUs with a multiplexer
 	  to switch between them. This adds support for dynamic switching when
-          X isn't running and delayed switching until the next logoff. This
+	  X isn't running and delayed switching until the next logoff. This
 	  feature is called hybrid graphics, ATI PowerXpress, and Nvidia
 	  HybridPower.