qcacld-3.0: Modify format specifier for get_wifi_feature

As per the new customer requirement, modify the format
specifier for the get_wifi_feature print.

Change-Id: I6ec605be7a4f77f3d4f8b6d65782dfcdfea2d75b
CRs-Fixed: 3310140

core/hdd/src/wlan_hdd_sysfs_wifi_features.c

@@ -48,7 +48,7 @@ static ssize_t  __hdd_sysfs_feature_set_show(struct hdd_context *hdd_ctx,
 			i = i + 2;
 			continue;
 		}
-		ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val, "%.2x",
+		ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val, "%.2X",
 				     hdd_ctx->oem_data[i]);
 	}