[PATCH] fbdev: sh7760fb: require FB=y to build cleanly

[Randy Dunlap]

Fix build errors when CONFIG_FB=m and CONFIG_FB_SH7760=y:

sh2-linux-ld: drivers/video/fbdev/sh7760fb.o: in function `sh7760fb_probe':
sh7760fb.c:(.text+0x374): undefined reference to `framebuffer_alloc'
sh2-linux-ld: sh7760fb.c:(.text+0x394): undefined reference to `fb_videomode_to_var'
sh2-linux-ld: sh7760fb.c:(.text+0x3a0): undefined reference to `fb_alloc_cmap'
sh2-linux-ld: sh7760fb.c:(.text+0x3a4): undefined reference to `register_framebuffer'
sh2-linux-ld: sh7760fb.c:(.text+0x3ac): undefined reference to `fb_dealloc_cmap'
sh2-linux-ld: sh7760fb.c:(.text+0x434): undefined reference to `framebuffer_release'
sh2-linux-ld: drivers/video/fbdev/sh7760fb.o: in function `sh7760fb_remove':
sh7760fb.c:(.text+0x800): undefined reference to `unregister_framebuffer'
sh2-linux-ld: sh7760fb.c:(.text+0x804): undefined reference to `fb_dealloc_cmap'
sh2-linux-ld: sh7760fb.c:(.text+0x814): undefined reference to `framebuffer_release'
sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0xc): undefined reference to `fb_io_read'
sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x10): undefined reference to `fb_io_write'
sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x2c): undefined reference to `cfb_fillrect'
sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x30): undefined reference to `cfb_copyarea'
sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x34): undefined reference to `cfb_imageblit'

Fixes: 4a25e41831ee ("video: sh7760fb: SH7760/SH7763 LCDC framebuffer driver")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: linux-fbdev@xxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: linux-sh@xxxxxxxxxxxxxxx
---
 drivers/video/fbdev/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -- a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1762,7 +1762,7 @@ config FB_COBALT
 
 config FB_SH7760
 	bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
-	depends on FB && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
+	depends on FB=y && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
 		|| CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721)
 	select FB_IOMEM_HELPERS
 	help