intel/devinfo: add a helper to check for slice availability

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14510>

src/intel/dev/intel_device_info.h

@@ -385,6 +385,14 @@ struct intel_device_info
 
 #endif
 
+static inline bool
+intel_device_info_slice_available(const struct intel_device_info *devinfo,
+                                  int slice)
+{
+   assert(slice < INTEL_DEVICE_MAX_SLICES);
+   return (devinfo->slice_masks & (1U << slice)) != 0;
+}
+
 static inline bool
 intel_device_info_subslice_available(const struct intel_device_info *devinfo,
                                      int slice, int subslice)