mb/asus/p8x7x-series: Enable common SIO ASL code

Bring in ACPI ASL code from sio/nuvoton/common and hook up the
SIO ACPI suspend hook.

TEST=PS/2 keyboard can wake asus/p8z77-m from S3 but not S5, as
expected.

Change-Id: I8d38928adb840d6fcb4703dd9ad69480813156ca
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89746
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/asus/p8x7x-series/acpi/platform.asl

@@ -12,10 +12,12 @@ Method(_PTS, 1)
 	{
 	    BLINK_POWER_LED = 1
 	}
+	\_SB.PCI0.LPCB.SIO0.SIOS(Arg0)
 }
 
 Method(_WAK, 1)
 {
 	BLINK_POWER_LED = 0
+	\_SB.PCI0.LPCB.SIO0.SIOW(Arg0)
 	Return(Package(){0, 0})
 }

src/mainboard/asus/p8x7x-series/acpi/superio.asl

@@ -1,3 +1,31 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
+#define SUPERIO_DEV		SIO0
+#define SUPERIO_PNP_BASE	CONFIG_SUPERIO_NUVOTON_PNP_BASE
 
-#include <drivers/pc80/pc/ps2_controller.asl>
+/* Defines to have ASLs below make visible some devices */
+#if !CONFIG(NO_UART_ON_SUPERIO)
+#define NCT677X_SHOW_SP1
+#endif
+
+/* TODO: Exclude next lines for variants without PS/2 port */
+#define NCT677X_SHOW_KBC
+#define SUPERIO_KBC_PS2KID	PS2K
+#define SUPERIO_KBC_PS2MID	PS2M
+
+/*
+ * This series uses one of four SIO chips:
+ * NCT6776 (p8c_ws)
+ * NCT6779D
+ * NCT5535D
+ * IT8771E (P8H77-I and P8H77-V LE, both not yet supported)
+ *
+ * Include the correct ASL file.
+ */
+
+#if CONFIG(SUPERIO_NUVOTON_NCT6779D)
+#include <superio/nuvoton/nct6779d/acpi/superio.asl>
+#elif CONFIG(SUPERIO_NUVOTON_NCT5535D)
+#include <superio/nuvoton/nct5535d/acpi/superio.asl>
+#elif CONFIG(SUPERIO_NUVOTON_NCT6776)
+#include <superio/nuvoton/nct6776/acpi/superio.asl>
+#endif