intel/dev: drop warning for unhandled hwconfig keys

The hwconfig api may change unexpectedly prior to public release of
new platforms.  Also, public documentation of the hwconfig api
sometimes lags the release.

For these reasons, warnings about unhandled hwconfig keys are noisy,
likely to occur, and unhelpful to most users.  This commit drops those
warnings, in favor of a separate internal process for tracking
hwconfig api changes.

Suggested-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by:  Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17846>

src/intel/dev/intel_hwconfig.c

@@ -265,10 +265,8 @@ apply_hwconfig_item(struct intel_device_info *devinfo,
    case INTEL_HWCONFIG_MAX_EU_PER_SUBSLICE:
    case INTEL_HWCONFIG_RAMBO_L3_BANK_SIZE_IN_KB:
    case INTEL_HWCONFIG_SLM_SIZE_PER_SS_IN_KB:
-      break; /* ignore */
    default:
-      fprintf(stderr, "hwconfig key %d (%s) unhandled!\n", item->key,
-              key_to_name(item->key));
+      break; /* ignore */
    }
 }