Revert "ASoC: wcd9304: Use M4 wcd9304 variant"

This reverts commit b031d1b1cf6e4c67bb3a8028c04b3a2b3fc4235f.

Conflicts:
	sound/soc/codecs/wcd9304_m4.c

Change-Id: Ia85fc6cc2d891171ea6d1eaf02c81f00ba81f078