video: bmp: rename CONFIG_BMP_24BMP to CONFIG_BMP_24BPP

Due to a typo, the 24 bit-per-pixel configuration ends in 24BMP
instead of 24BPP. This change renames it throughout the source tree
for consistency and to make moving these options into Kconfig easier
and less error-prone.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c
index 32a4e7f..f803067 100644
--- a/drivers/video/video_bmp.c
+++ b/drivers/video/video_bmp.c
@@ -316,7 +316,7 @@
 		}
 		break;
 #endif /* CONFIG_BMP_16BPP */
-#if defined(CONFIG_BMP_24BMP)
+#if defined(CONFIG_BMP_24BPP)
 	case 24:
 		for (i = 0; i < height; ++i) {
 			for (j = 0; j < width; j++) {
@@ -328,7 +328,7 @@
 			fb -= priv->line_length + width * (bpix / 8);
 		}
 		break;
-#endif /* CONFIG_BMP_24BMP */
+#endif /* CONFIG_BMP_24BPP */
 #if defined(CONFIG_BMP_32BPP)
 	case 32:
 		for (i = 0; i < height; ++i) {