boot/uboot: use proper spelling of "U-Boot"

Signed-off-by: Pierre-Jean Texier <pjtexier@koncepto.io>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

boot/uboot/Config.in

@@ -249,7 +249,7 @@ config BR2_TARGET_UBOOT_FORMAT_SD
 	  This is Freescale i.MX28 SB format, with a header for booting
 	  from an SD card.
 
-	  U-boot includes an mxsboot tool to generate this format,
+	  U-Boot includes an mxsboot tool to generate this format,
 	  starting from 2011.12.
 
 	  See doc/README.mxs (or doc/README.mx28_common before 2013.07)
@@ -261,7 +261,7 @@ config BR2_TARGET_UBOOT_FORMAT_NAND
 	  This is Freescale i.MX28 BootStream format (.sb), with a
 	  header for booting from a NAND flash.
 
-	  U-boot includes an mxsboot tool to generate this format,
+	  U-Boot includes an mxsboot tool to generate this format,
 	  starting from 2011.12.
 
 	  There are two possibilities when preparing an image writable

boot/uboot/uboot.mk

@@ -390,7 +390,7 @@ endef
 ifeq ($(BR2_TARGET_UBOOT_ENVIMAGE),y)
 ifeq ($(BR_BUILDING),y)
 ifeq ($(call qstrip,$(BR2_TARGET_UBOOT_ENVIMAGE_SIZE)),)
-$(error Please provide Uboot environment size (BR2_TARGET_UBOOT_ENVIMAGE_SIZE setting))
+$(error Please provide U-Boot environment size (BR2_TARGET_UBOOT_ENVIMAGE_SIZE setting))
 endif
 endif
 UBOOT_DEPENDENCIES += host-uboot-tools
@@ -399,7 +399,7 @@ endif
 ifeq ($(BR2_TARGET_UBOOT_BOOT_SCRIPT),y)
 ifeq ($(BR_BUILDING),y)
 ifeq ($(call qstrip,$(BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE)),)
-$(error Please define a source file for Uboot boot script (BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE setting))
+$(error Please define a source file for U-Boot boot script (BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE setting))
 endif
 endif
 UBOOT_DEPENDENCIES += host-uboot-tools