mfd: rtsx: Clear hardware PFM mode in rtl8411b

Clear hw_pfm_en to disable hardware PFM mode, to fix a bug that in some
situation registers in 0xFDxx domain can't be accessed.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
index 56cc248..d183fa0 100644
--- a/drivers/mfd/rtl8411.c
+++ b/drivers/mfd/rtl8411.c
@@ -114,6 +114,8 @@
 			0xFF, pcr->sd30_drive_sel_3v3);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
 			CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, FUNC_FORCE_CTL,
+			0x06, 0x00);
 
 	return rtsx_pci_send_cmd(pcr, 100);
 }