b43: Update LP-PHY rev2+ baseband init to match the specs

The rev2+ BB init spec has changed behind us, and thus the code is
no longer up to date. Update the code to match the current specs.
Also implement save/restore dig filt state, as required by the
new specification.

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_lp.h

@@ -865,6 +865,9 @@ struct b43_phy_lp {
 	/* Transmit iqlocal best coeffs */
 	bool tx_iqloc_best_coeffs_valid;
 	u8 tx_iqloc_best_coeffs[11];
+
+	/* Used for "Save/Restore Dig Filt State" */
+	u16 dig_flt_state[9];
 };