plymouth: Include kms modules even if they are not currently loaded.

This should fix initial initrd generation during install.
If the modules are not desired to be used, the nokmsboot kernel
command line should disable them.

modules.d/50plymouth/module-setup.sh

@@ -14,7 +14,17 @@ installkernel() {
     local _modname
     # Include KMS capable drm drivers
     for _modname in $(find "$srcmods/kernel/drivers/gpu/drm" "$srcmods/extra" \( -name '*.ko' -o -name '*.ko.gz' \) 2>/dev/null); do
-        zgrep -q drm_crtc_init  $_modname && instmods $_modname
+        if zgrep -q drm_crtc_init  $_modname; then
+            # if the hardware is present, include module even if it is not currently loaded,
+            # as we could e.g. be in the installer; nokmsboot boot parameter will disable
+            # loading of the driver if needed
+            if [[ $hostonly ]] && modinfo -F alias $_modname | sed -e 's,\?,\.,g' -e 's,\*,\.\*,g' \
+                                  | grep -qxf - /sys/bus/pci/devices/*/modalias; then
+                hostonly='' instmods $_modname
+                continue
+            fi
+            instmods $_modname
+        fi
     done
 }