Update snd.conf

Add the sound config mentioned in #11.

config/etc/modprobe.d/snd.conf

@@ -1,8 +1,14 @@
+# Please open an issue if this fixes your sound.
+
 # Uncomment the following lines to force snd_hda_intel instead of snd_sof and
 # apply the bass speaker fix if the sound subsystem is similar to the one of
 # the Yoga9 14IAP7, yet unsupported.
 #
-# Please open an issue if this fixes your sound.
-
+# This won't be able to support your microphone, and on later Intel platforms
+# no sound at all.
 #options snd_intel_dspcfg dsp_driver=1
 #options snd_hda_intel model=alc287-yoga9-bass-spk-pin
+
+# This line enables the sound card specific patch I used for the Yoga 9 14IAP7 on
+# other non-auto-detected hardware using the snd-sof driver.
+options snd-sof-intel-hda-common hda_model=alc287-yoga9-bass-spk-pin