DM: Disable plane_restriction on 4.19 kernel

Now the plane_restriction is not ready on 4.19-rcX kernel. So it will be
disabled temporally.
This change is only used to disable the plane_restriction for UOS when UOS
based on 4.14 kernel is launched in 4.19 sos kernel.

V1->V2: Commit log adds the description that this change is used to disable
the plane_restriction in 4.14 UOS kernel.

Tracked-on: https://github.com/projectacrn/acrn-hypervisor/issues/1373
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: He, Min <min.he@intel.com>

devicemodel/samples/nuc/launch_uos.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+kernel_version=$(uname -r | awk -F. '{ printf("%d.%d", $1,$2) }')
+
 function launch_clear()
 {
 vm_name=vm$1
@@ -41,4 +43,10 @@ for i in `ls -d /sys/devices/system/cpu/cpu[1-99]`; do
         fi
 done
 
-launch_clear 1 1 "64 448 8" 0x070F00 clear
+gvt_args=0x070F00
+# this is the temporal solution before plane_restriction is ready on 4.19
+if [ "$kernel_version" = "4.19" ]; then
+gvt_args=0
+fi
+
+launch_clear 1 1 "64 448 8" $gvt_args clear