ath9k_hw: fix analog shift register writes on AR9003

Writes to the analog shift registers, which are issues by the initval
programming function, require a 100 usec delay (similar to AR9002,
but in a different register range).

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9003_phy.c

@@ -542,7 +542,11 @@ static void ar9003_hw_prog_ini(struct ath_hw *ah,
 		u32 reg = INI_RA(iniArr, i, 0);
 		u32 val = INI_RA(iniArr, i, column);
 
-		REG_WRITE(ah, reg, val);
+		if (reg >= 0x16000 && reg < 0x17000)
+			ath9k_hw_analog_shift_regwrite(ah, reg, val);
+		else
+			REG_WRITE(ah, reg, val);
+
 		DO_DELAY(regWrites);
 	}
 }