rtl8xxxu: Set register 0xfe10 on rtl8192cu based parts

This register is undocumented in the vendor code, but it is set
unconditionally for all 8192cu/8188cu/8188ru parts.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c

@@ -7214,6 +7214,8 @@ static int rtl8192cu_power_on(struct rtl8xxxu_priv *priv)
 		CR_SCHEDULE_ENABLE | CR_MAC_TX_ENABLE | CR_MAC_RX_ENABLE;
 	rtl8xxxu_write16(priv, REG_CR, val16);
 
+	rtl8xxxu_write8(priv, 0xfe10, 0x19);
+
 	/*
 	 * Workaround for 8188RU LNA power leakage problem.
 	 */