mkinitcpio: add missing patch

mkinitcpio/0001-autodetect-resolve-guessed-filesystem-modules.patch

@@ -0,0 +1,45 @@
+From be9a42675f3ea125c9daa45986a3b58ba8bae226 Mon Sep 17 00:00:00 2001
+From: Dave Reisner <dreisner@archlinux.org>
+Date: Tue, 21 Feb 2012 16:47:56 -0500
+Subject: [PATCH] autodetect: resolve guessed filesystem modules
+
+Trading out modinfo for modprobe allows us to detect filesystems like
+ext2 and ext3 which might be aliased to ext4 in the case of Kconfig
+CONFIG_EXT4_USE_FOR_EXT23 being enabled. Maybe this catches other insane
+corner cases, too.
+
+Since we now treat this as possible aliases, we also need to be mindful
+of the fact that it could resolve to multiple module names. Assign the
+output as an array to respect this.
+
+Fixes FS#28569.
+
+Signed-off-by: Dave Reisner <dreisner@archlinux.org>
+---
+ install/autodetect |   10 ++++++++--
+ 1 files changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/install/autodetect b/install/autodetect
+index 5cc908c..cc12124 100644
+--- a/install/autodetect
++++ b/install/autodetect
+@@ -7,8 +7,14 @@ build() {
+     MODULE_FILE=$workdir/autodetect_modules
+ 
+     add_if_avail() {
+-        if modinfo -k "$KERNELVERSION" "$1" &>/dev/null; then
+-            printf '%s\n' "$1" >>"$MODULE_FILE"
++        local resolved
++
++        # treat this as an alias, since ext3 might be aliased to ext4.
++        IFS=$'\n' read -rd '' -a resolved < \
++            <(modprobe -S "$KERNELVERSION" -R "$1" 2>/dev/null)
++
++        if (( ${#resolved[*]} )); then
++            printf '%s\n' "${resolved[@]}" >>"$MODULE_FILE"
+         fi
+     }
+ 
+-- 
+1.7.9.1
+