video: Move bmp code to drivers/video

This relates to graphics which is only active when CONFIG_VIDEO is
enabled. Move it into that directory.

For most boards there is no harm in compiling it always, since it if not
used it will be dropped by the linker. But for the EFI app this is not
the case, so retain use of the BMP Kconfig.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index d13af9f..fdc2937 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -25,6 +25,7 @@
 obj-$(CONFIG_$(SPL_TPL_)SIMPLE_PANEL) += simple_panel.o
 
 obj-$(CONFIG_VIDEO_LOGO) += u_boot_logo.o
+obj-$(CONFIG_$(SPL_TPL_)BMP) += bmp.o
 
 endif