video: kconfig: Set default FB size for Bochs

Set up a default frame buffer size of 8MiB for Bochs for non-x86
architecturs as PCI is normally not enumerated before relocation
on these architectures.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 3f6b7d7..e32ce13 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -65,7 +65,8 @@
 config VIDEO_PCI_DEFAULT_FB_SIZE
 	hex "Default framebuffer size to use if no drivers request it"
 	default 0x1000000 if X86
-	default 0 if !X86
+	default 0x800000 if !X86 && VIDEO_BOCHS
+	default 0 if !X86 && !VIDEO_BOCHS
 	help
 	  Generally, video drivers request the amount of memory they need for
 	  the frame buffer when they are bound, by setting the size field in
@@ -1037,7 +1038,8 @@
 config SPL_VIDEO_PCI_DEFAULT_FB_SIZE
 	hex "Default framebuffer size to use if no drivers request it at SPL"
 	default 0x1000000 if X86
-	default 0 if !X86
+	default 0x800000 if !X86 && VIDEO_BOCHS
+	default 0 if !X86 && !VIDEO_BOCHS
 	help
 	  Generally, video drivers request the amount of memory they need for
 	  the frame buffer when they are bound, by setting the size field in