global: Use proper project name U-Boot (next)

Use proper project name in DTs, messages and READMEs.

Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/board/armadeus/opos6uldev/opos6uldev.env b/board/armadeus/opos6uldev/opos6uldev.env
index 585f28c..f900297 100644
--- a/board/armadeus/opos6uldev/opos6uldev.env
+++ b/board/armadeus/opos6uldev/opos6uldev.env
@@ -42,8 +42,8 @@
 		setexpr sz ${filesize} / 0x200;
 		setexpr sz ${sz} + 1;
 		if mmc write ${loadaddr} 0x2 ${sz}; then
-			echo Flashing of U-boot SPL succeed;
-		else echo Flashing of U-boot SPL failed;
+			echo Flashing of U-Boot SPL succeed;
+		else echo Flashing of U-Boot SPL failed;
 		fi;
 	fi;
 download_uboot_img=tftpboot ${loadaddr} ${board_name}-u-boot.img
@@ -52,8 +52,8 @@
 		setexpr sz ${filesize} / 0x200;
 		setexpr sz ${sz} + 1;
 		if mmc write ${loadaddr} 0x8a ${sz}; then
-			echo Flashing of U-boot image succeed;
-		else echo Flashing of U-boot image failed;
+			echo Flashing of U-Boot image succeed;
+		else echo Flashing of U-Boot image failed;
 		fi;
 	fi;
 update_uboot=run download_uboot_spl flash_uboot_spl