Due to the definitions of CS420X_IMAC27_122 and CS420X_APPLE as
aliases, the rest enums are set to duplicated values unexpectedly.
Move the alias definitions at the end so that the enum values are
defined in the proper order.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>