cxl/hdm: Use str_plural() to simplify the code

Use the string choice helper function str_plural() to simplify the code.

Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20250811122519.543554-1-zhao.xichao@vivo.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

Author: Xichao Zhao

drivers/cxl/core/hdm.c

@@ -197,7 +197,7 @@ struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port,
 	 */
 	if (should_emulate_decoders(info)) {
 		dev_dbg(dev, "Fallback map %d range register%s\n", info->ranges,
-			info->ranges > 1 ? "s" : "");
+			str_plural(info->ranges));
 		cxlhdm->decoder_count = info->ranges;
 	}