grub.cfg: replace spaces with tabs

resources/grub/config/grub.cfg

@@ -44,7 +44,7 @@ function try_user_config {
 	for dir in boot grub grub2 boot/grub boot/grub2; do
 		for name in '' osboot_ autoboot_ libreboot_ coreboot_; do
 			if [ -f /"${dir}"/"${name}"grub.cfg ]; then
-                unset superusers
+				unset superusers
 				configfile /"${dir}"/"${name}"grub.cfg
 			fi
 		done
@@ -127,13 +127,13 @@ menuentry 'Load Operating System (incl. fully encrypted disks)  [o]' --hotkey='o
 	if [ (ahci?) != "(ahci?)" ]; then
 		ahcilist=(ahci*)
 		for part in ${ahcilist}; do
-	        	ahcidev="$part $ahcidev"
+				ahcidev="$part $ahcidev"
 		done
 	fi
 	if [ (ata?) != "(ata?)" ]; then
 		atalist=(ata*)
 		for part in ${atalist}; do
-	        	atadev="$part $atadev"
+				atadev="$part $atadev"
 		done
 	fi
 	set pager=0
@@ -222,14 +222,14 @@ menuentry 'Search for GRUB2 configuration on external media  [s]' --hotkey='s' {
 }
 if [ -f (cbfsdisk)/seabios.elf ]; then
 menuentry 'Load SeaBIOS (payload) [b]' --hotkey='b' {
-    set root='cbfsdisk'
-    chainloader /seabios.elf
+	set root='cbfsdisk'
+	chainloader /seabios.elf
 }
 fi
 if [ -f (cbfsdisk)/img/grub2 ]; then
 menuentry 'Return to SeaBIOS [b]' --hotkey='b' {
-    set root='cbfsdisk'
-    chainloader /fallback/payload
+	set root='cbfsdisk'
+	chainloader /fallback/payload
 }
 fi
 menuentry 'Poweroff  [p]' --hotkey='p' {