smihandler.c: Fix doxygen errors in southbridge_smi_handler

Correct the param to match the functions.

Change-Id: Id002c549a6ba6a7be4fa5eee396769eaa2510698
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/8074
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

src/southbridge/intel/ibexpeak/smihandler.c

@@ -819,10 +819,9 @@ static smi_handler_t southbridge_smi[32] = {
 
 /**
  * @brief Interrupt handler for SMI#
- *
- * @param smm_revision revision of the smm state save map
+ * @param node
+ * @param state_save
  */
-
 void southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save)
 {
 	int i, dump = 0;