Blackfin: bf537: fix lq035 platform device name

Lq035 fb driver uses KBUILD_MODNAME which is bf537_lq035 instead of
bf537-lq035.
Signed-off-by: NScott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>

arch/blackfin/mach-bf537/boards/stamp.c

@@ -1525,7 +1525,7 @@ static struct platform_device bfin_sport_spi1_device = {
 
 #if defined(CONFIG_FB_BF537_LQ035) || defined(CONFIG_FB_BF537_LQ035_MODULE)
 static struct platform_device bfin_fb_device = {
-	.name = "bf537-lq035",
+	.name = "bf537_lq035",
 };
 #endif