video: Move bmp_display() prototype to video.h

The lcd.h header is about to be deleted, so move this prototype.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/bmp.c b/cmd/bmp.c
index 5a3c8dd..880edad 100644
--- a/cmd/bmp.c
+++ b/cmd/bmp.c
@@ -221,16 +221,6 @@
 	return(0);
 }
 
-/*
- * Subroutine:  bmp_display
- *
- * Description: Display bmp file located in memory
- *
- * Inputs:	addr		address of the bmp file
- *
- * Return:      None
- *
- */
 int bmp_display(ulong addr, int x, int y)
 {
 #ifdef CONFIG_DM_VIDEO
diff --git a/include/video.h b/include/video.h
index 529f968..43f2e2c 100644
--- a/include/video.h
+++ b/include/video.h
@@ -346,4 +346,13 @@
  */
 void *video_get_u_boot_logo(void);
 
+/*
+ * bmp_display() - Display BMP (bitmap) data located in memory
+ *
+ * @addr: address of the bmp data
+ * @x: Position of bitmap from the left side, in pixels
+ * @y: Position of bitmap from the top, in pixels
+ */
+int bmp_display(ulong addr, int x, int y);
+
 #endif