common: Drop duplicate space in SPL_BMP description

Drop duplicate space in Kconfig symbol description.

Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/common/Kconfig b/common/Kconfig
index f2dfda4..cdb77a6 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -1174,7 +1174,7 @@
 	  Enable bmp functions to display bmp image and get bmp info.
 
 config SPL_BMP
-	bool "Enable bmp image display at  SPL"
+	bool "Enable bmp image display at SPL"
 	depends on SPL_VIDEO
 	help
 	  Enable bmp functions to display bmp image and get bmp info at SPL.