video: fbdev: matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen

Start from commit 11be60bd66 "matroxfb: add Matrox MGA-G200eW board
support", when maxvram is 0x800000, monitor become black w/ error message
said: "The current input timing is not supported by the monitor display.
Please change your input timing to 1920x1080@60Hz ...".

Fixes: 11be60bd66 ("matroxfb: add Matrox MGA-G200eW board support")
Signed-off-by: Z. Liu <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

drivers/video/fbdev/matrox/matroxfb_base.c

@@ -1377,7 +1377,7 @@ static struct video_board vbG200 = {
 	.lowlevel = &matrox_G100
 };
 static struct video_board vbG200eW = {
-	.maxvram = 0x800000,
+	.maxvram = 0x100000,
 	.maxdisplayable = 0x800000,
 	.accelID = FB_ACCEL_MATROX_MGAG200,
 	.lowlevel = &matrox_G100