src/device/Kconfig: fix typo in label "1024x768 256-color"

It had an extraneous digit after 768.

Change-Id: Ie415e365f3eac0ed326786cea4c4628c002c4762
Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Reviewed-on: http://review.coreboot.org/6306
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
diff --git a/src/device/Kconfig b/src/device/Kconfig
index 52d12c7..c9514c1 100644
--- a/src/device/Kconfig
+++ b/src/device/Kconfig
@@ -369,7 +369,7 @@
 	bool "1024x768 16-color"
 
 config FRAMEBUFFER_VESA_MODE_105
-	bool "1024x7686 256-color"
+	bool "1024x768 256-color"
 
 config FRAMEBUFFER_VESA_MODE_106
 	bool "1280x1024 16-color"