drm/xe/xe_survivability: Use static for survivability info attributes

Fix sparse warnings. Use static for survivability info attributes.

Fixes: f4e9fc9 ("drm/xe/xe_survivability: Redesign survivability mode")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512101919.G12cuhBJ-lkp@intel.com/
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20251219105224.871930-5-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Author: rtauro1895

drivers/gpu/drm/xe/xe_survivability_mode.c

@@ -221,15 +221,15 @@ static ssize_t survivability_info_show(struct device *dev,
 		.index = _index,						\
 	}
 
-SURVIVABILITY_ATTR_RO(capability_info, CAPABILITY_INFO);
-SURVIVABILITY_ATTR_RO(postcode_trace, POSTCODE_TRACE);
-SURVIVABILITY_ATTR_RO(postcode_trace_overflow, POSTCODE_TRACE_OVERFLOW);
-SURVIVABILITY_ATTR_RO(aux_info0, AUX_INFO0);
-SURVIVABILITY_ATTR_RO(aux_info1, AUX_INFO1);
-SURVIVABILITY_ATTR_RO(aux_info2, AUX_INFO2);
-SURVIVABILITY_ATTR_RO(aux_info3, AUX_INFO3);
-SURVIVABILITY_ATTR_RO(aux_info4, AUX_INFO4);
-SURVIVABILITY_ATTR_RO(fdo_mode, FDO_INFO);
+static SURVIVABILITY_ATTR_RO(capability_info, CAPABILITY_INFO);
+static SURVIVABILITY_ATTR_RO(postcode_trace, POSTCODE_TRACE);
+static SURVIVABILITY_ATTR_RO(postcode_trace_overflow, POSTCODE_TRACE_OVERFLOW);
+static SURVIVABILITY_ATTR_RO(aux_info0, AUX_INFO0);
+static SURVIVABILITY_ATTR_RO(aux_info1, AUX_INFO1);
+static SURVIVABILITY_ATTR_RO(aux_info2, AUX_INFO2);
+static SURVIVABILITY_ATTR_RO(aux_info3, AUX_INFO3);
+static SURVIVABILITY_ATTR_RO(aux_info4, AUX_INFO4);
+static SURVIVABILITY_ATTR_RO(fdo_mode, FDO_INFO);
 
 static void xe_survivability_mode_fini(void *arg)
 {