rtl8xxxu: Pick PHY init table based on chip version first

Pick PHY init table based on device before distinguishing between
1T/2T/high PA tables. The latter is only currently used for
8188cu/8192cu/8188ru.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>