soc/intel/common/acpi: Remove gpio community range

Remove hardcoded gpio community range, since it might differ across
the SOCs.

Change-Id: I79c10669f6096537d466d1abd356d58a50fcb8f5
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41500
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/soc/intel/common/acpi/gpio.asl

@@ -3,7 +3,7 @@
 /*
  * Configure GPIO Power Management bits
  *
- * Arg0: GPIO community (0-5)
+ * Arg0: GPIO community index
  * Arg1: PM bits in MISCCFG
  */
 Method (CGPM, 2, Serialized)