intel: common: Remove urgent from mailbox async

Remove urgent argument from asynchrounous mailbox command as any urgent
command should always be synchronous

Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Change-Id: Iaa64335db24df3a562470d0d1c3d6a3a71493319
diff --git a/plat/intel/soc/common/include/socfpga_mailbox.h b/plat/intel/soc/common/include/socfpga_mailbox.h
index f44bc0e..710ecf0 100644
--- a/plat/intel/soc/common/include/socfpga_mailbox.h
+++ b/plat/intel/soc/common/include/socfpga_mailbox.h
@@ -141,7 +141,7 @@
 int mailbox_send_cmd(int job_id, unsigned int cmd, uint32_t *args,
 			int len, int urgent, uint32_t *response, int resp_len);
 int mailbox_send_cmd_async(int job_id, unsigned int cmd, uint32_t *args,
-				int len, int urgent, int indirect);
+				int len, int indirect);
 int mailbox_read_response(int job_id, uint32_t *response, int resp_len);
 void mailbox_reset_cold(void);
 void mailbox_clear_response(void);