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/ls2080a_simu.h b/include/configs/ls2080a_simu.h
index 876ee30..2c2ce7b 100644
--- a/include/configs/ls2080a_simu.h
+++ b/include/configs/ls2080a_simu.h
@@ -11,12 +11,12 @@
 
 #ifdef CONFIG_LS2080A
 #define CONFIG_IDENT_STRING		" LS2080A-SIMU"
-#define CONFIG_BOOTP_VCI_STRING		"U-boot.LS2080A-SIMU"
+#define CONFIG_BOOTP_VCI_STRING		"U-Boot.LS2080A-SIMU"
 #endif
 
 #ifdef CONFIG_LS2085A
 #define CONFIG_IDENT_STRING		" LS2085A-SIMU"
-#define CONFIG_BOOTP_VCI_STRING		"U-boot.LS2085A-SIMU"
+#define CONFIG_BOOTP_VCI_STRING		"U-Boot.LS2085A-SIMU"
 #endif
 
 #define CONFIG_SYS_CLK_FREQ	100000000