x86: tangier: Use official ACPI HID for FLIS IP

FLIS IP since now gets its own ACPI ID.
Drop PRP0001 workaround in favour of official ACPI HID.

Corresponding kernel commit dabd4bc6de2b

	pinctrl: intel: merrifield: Introduce ACPI device table

in the pin control subsystem tree [1] targeting v4.16.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git/commit/?h=for-next&id=dabd4bc6de2bReviewed-by: NBin Meng <bmeng.cn@gmail.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

arch/x86/include/asm/arch-tangier/acpi/southcluster.asl

@@ -264,7 +264,7 @@ Device (PCI0)
 
 Device (FLIS)
 {
-    Name (_HID, "PRP0001")
+    Name (_HID, "INTC1002")
     Name (_DDN, "Intel Merrifield Family-Level Interface Shim")
     Name (RBUF, ResourceTemplate()
     {
@@ -284,13 +284,6 @@ Device (FLIS)
         Return (RBUF)
     }
 
-    Name (_DSD, Package () {
-        ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
-        Package () {
-            Package () {"compatible", "intel,merrifield-pinctrl"},
-        }
-    })
-
     Method (_STA, 0, NotSerialized)
     {
         Return (STA_VISIBLE)