Use correct spelling of "U-Boot"

Correct spelling of "U-Boot" shall be used in all written text
(documentation, comments in source files etc.).

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/origen.h b/include/configs/origen.h
index ef80bf6..fa71874 100644
--- a/include/configs/origen.h
+++ b/include/configs/origen.h
@@ -111,7 +111,7 @@
 
 #define CONFIG_SYS_INIT_SP_ADDR		0x02040000
 
-/* U-boot copy size from boot Media to DRAM.*/
+/* U-Boot copy size from boot Media to DRAM.*/
 #define COPY_BL2_SIZE		0x80000
 #define BL2_START_OFFSET	((CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)/512)
 #define BL2_SIZE_BLOC_COUNT	(COPY_BL2_SIZE/512)