video: use BMP_ALIGN_CENTER define from splash.h

Drop BMP_ALIGN_CENTER define in lcd.c and video_bmp.c as it is
already defined by splash.h. Include splash.h in bmp code.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c
index 1377e19..2898b0b 100644
--- a/drivers/video/video_bmp.c
+++ b/drivers/video/video_bmp.c
@@ -7,6 +7,7 @@
 #include <bmp_layout.h>
 #include <dm.h>
 #include <mapmem.h>
+#include <splash.h>
 #include <video.h>
 #include <watchdog.h>
 #include <asm/unaligned.h>
@@ -140,8 +141,6 @@
 }
 #endif /* CONFIG_BMP_16BPP */
 
-#define BMP_ALIGN_CENTER	0x7fff
-
 /**
  * video_splash_align_axis() - Align a single coordinate
  *