ec/google/wilco/acpi/dptf: Fix mutex synclevel

Both Windows and MacOS get cranky if the Mutex synclevel is non-zero,
aborting any Acquire() call with Mutex param that has a non-zero
synclevel.

TEST=build/boot Win11 on google/drallion, verify DPTF driver loaded and
functional.

Change-Id: Ie77e9ed04658b508b2063ae219afcdc0ac465c58
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77279
Reviewed-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/ec/google/wilco/acpi/dptf.asl

@@ -5,7 +5,7 @@
  */
 
 /* Mutex for EC PAT interface */
-Mutex (PATM, 1)
+Mutex (PATM, 0)
 
 /* Read requested temperature sensor */
 Method (TSRD, 1, Serialized)