mei: gsc: add transition to PXP mode in resume flow

Added transition to PXP mode in resume flow.

CC: Daniele Ceraolo Spurio <[e-mail]>
Signed-off-by: Vitaly Lubart <[e-mail]>
Signed-off-by: Tomas Winkler <[e-mail]>
Signed-off-by: Alexander Usyskin <[e-mail]>
Reviewed-by: Daniele Ceraolo Spurio <[e-mail]>
Signed-off-by: Daniele Ceraolo Spurio <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Acked-by: Greg Kroah-Hartman <[e-mail]>
Signed-off-by: Joonas Lahtinen <[e-mail]>

drivers/misc/mei/gsc-me.c

···
 static int __maybe_unused mei_gsc_pm_resume(struct device *device)
 {
 	struct mei_device *dev = dev_get_drvdata(device);
+	struct auxiliary_device *aux_dev;
+	struct mei_aux_device *adev;
 	int err;
+	struct mei_me_hw *hw;
 
 	if (!dev)
 		return -ENODEV;
+
+	hw = to_me_hw(dev);
+	aux_dev = to_auxiliary_dev(device);
+	adev = auxiliary_dev_to_mei_aux_dev(aux_dev);
+	if (adev->ext_op_mem.start) {
+		mei_gsc_set_ext_op_mem(hw, &adev->ext_op_mem);
+		dev->pxp_mode = MEI_DEV_PXP_INIT;
+	}
 
 	err = mei_restart(dev);
 	if (err)