dracut: Don't suppress the modprobe error output.

It happens that either due to newer modprobe or missing depmod
module-init-tools cries.
Suppressing the error ensures for a funny debug search for the user.
Resulting initramfs is generally unbootable due to missing module deps.

Better use the quiet option of modprobe itself.
It makes it less chatty, but doesn't suppress "fatal" errors.

Signed-off-by: maximilian attems <max@stro.at>

dracut-functions

@@ -670,7 +670,7 @@ install_kmod_with_fw() {
 for_each_kmod_dep() {
     local func=$1 kmod=$2 cmd modpapth options
     shift 2
-    modprobe "$@" --ignore-install --show-depends $kmod 2>/dev/null | \
+    modprobe "$@" --ignore-install --quiet --show-depends $kmod | \
         while read cmd modpath options; do
         [[ $cmd = insmod ]] || continue
         $func $modpath

dracut-gencmdline

@@ -72,7 +72,7 @@ moduledep() {
     fi
     vecho -n "Looking for deps of module $1"
     deps=""
-    deps=$(modprobe $MPARGS --set-version $kernel --show-depends $1 2>/dev/null| awk '/^insmod / { print gensub(".*/","","g",$2) }' | while read foo ; do [ "${foo%%.ko}" != "$1" ] && echo -n "${foo%%.ko} " ; done)
+    deps=$(modprobe $MPARGS --set-version $kernel --quiet --show-depends $1 | awk '/^insmod / { print gensub(".*/","","g",$2) }' | while read foo ; do [ "${foo%%.ko}" != "$1" ] && echo -n "${foo%%.ko} " ; done)
     [ -n "$deps" ] && vecho ": $deps" || vecho
 }