unify grub scripts under one directory

new commands are thus,

build grub payloads:
./build grub payload
(formerly ./build payload grub)

build grub utils:
./build grub utils
(formerly ./build module grub)

The scripts is build/module/ will mostly be
deleted. I say mostly, because some of them
are being moved instead.

The deleted ones will be ones that basically
just run "make" in the target directory. They
will be unified, in a follow-up patch.

Signed-off-by: Leah Rowe <leah@libreboot.org>

resources/scripts/build/boot/roms_helper

@@ -205,7 +205,7 @@ if [ "${payload_grub}" = "y" ] \
 
 		if [ ! -f "${grubelf}" ] || [ ! -f "${grubcfg}" ] || \
 		    [ ! -f "${grubtestcfg}" ]; then
-			./build payload grub
+			./build grub payload
 		fi
 	done
 fi

resources/scripts/build/grub/payload

@@ -33,7 +33,7 @@ main()
 	[ ! -d "grub/" ] && \
 		./fetch grub
 	[ ! -f "grub/grub-mkstandalone" ] && \
-		./build module grub
+		./build grub utils
 	[ ! -d "elf/" ] && \
 		mkdir -p elf/
 	[ ! -d "elf/grub" ] && \