grub-btrfs: remove root requirement

srcpkgs/grub-btrfs/patches/no-root-please.patch

@@ -0,0 +1,15 @@
+Index: grub-btrfs-4.9/Makefile
+===================================================================
+--- grub-btrfs-4.9.orig/Makefile
++++ grub-btrfs-4.9/Makefile
+@@ -9,10 +9,6 @@ LIB_DIR = $(DESTDIR)$(PREFIX)/lib
+ .PHONY: install uninstall help
+ 
+ install:
+-	@if test "$(shell id -u)" != 0; then \
+-		echo "You are not root, run this target as root please."; \
+-		exit 1; \
+-	fi
+ 	@install -Dm755 -t "$(DESTDIR)/etc/grub.d/" 41_snapshots-btrfs
+ 	@install -Dm644 -t "$(DESTDIR)/etc/default/grub-btrfs/" config
+ 	@install -Dm644 -t "$(LIB_DIR)/systemd/system/" grub-btrfs.service

srcpkgs/grub-btrfs/template

@@ -10,6 +10,7 @@ license="GPL-3.0-or-later"
 homepage="https://github.com/Antynea/grub-btrfs"
 distfiles="https://github.com/Antynea/grub-btrfs/archive/v${version}.tar.gz"
 checksum=62461133c697643e98a608239773f500edee3e4055c5729fef6639d1cd610243
+patch_args=-Np1
 
 post_install() {
 	rm -rf -- "${DESTDIR}"/usr/lib/systemd