usb: mtu3: dump a status register of IPPC

Add a SSUSB_IP_PW_STS1 register to show ip sleep status
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1622182260-23767-3-git-send-email-chunfeng.yun@mediatek.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/mtu3/mtu3_debugfs.c

@@ -30,6 +30,7 @@ static const struct debugfs_reg32 mtu3_ippc_regs[] = {
 	dump_register(SSUSB_IP_PW_CTRL1),
 	dump_register(SSUSB_IP_PW_CTRL2),
 	dump_register(SSUSB_IP_PW_CTRL3),
+	dump_register(SSUSB_IP_PW_STS1),
 	dump_register(SSUSB_OTG_STS),
 	dump_register(SSUSB_IP_XHCI_CAP),
 	dump_register(SSUSB_IP_DEV_CAP),