openrisc: prevent VGA console, fix builds

OpenRISC does not support VGA console, so prevent that kconfig symbol
from being enabled for OpenRISC, thus fixing these build errors:

   drivers/built-in.o: In function `vgacon_save_screen':
   vgacon.c:(.text+0x20e0): undefined reference to `screen_info'
   vgacon.c:(.text+0x20e8): undefined reference to `screen_info'
   drivers/built-in.o: In function `vgacon_init':
   vgacon.c:(.text+0x284c): undefined reference to `screen_info'
   vgacon.c:(.text+0x2850): undefined reference to `screen_info'
   drivers/built-in.o: In function `vgacon_startup':
   vgacon.c:(.text+0x28d8): undefined reference to `screen_info'
   drivers/built-in.o:vgacon.c:(.text+0x28f0): more undefined references to `screen_info' follow

Signed-off-by: Randy Dunlap <[email protected]>
Reported-by: kbuild test robot <[email protected]>
Cc: Chen Gang <[email protected]>
Cc: Jonas Bonn <[email protected]>
Signed-off-by: Stafford Horne <[email protected]>

Author: rddunlap

drivers/video/console/Kconfig

@@ -9,7 +9,7 @@ config VGA_CONSOLE
 	depends on !4xx && !8xx && !SPARC && !M68K && !PARISC && !FRV && \
 		!SUPERH && !BLACKFIN && !AVR32 && !MN10300 && !CRIS && \
 		(!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
-		!ARM64 && !ARC && !MICROBLAZE
+		!ARM64 && !ARC && !MICROBLAZE && !OPENRISC
 	default y
 	help
 	  Saying Y here will allow you to use Linux in text mode through a