Fix MISRA rule 8.3 in common code

Rule 8.3: All declarations of an object or function shall
          use the same names and type qualifiers.

Change-Id: Iff384187c74a598a4e73f350a1893b60e9d16cec
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 411202d..e614cdb 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -301,7 +301,7 @@
  * Mandatory PSCI functions (BL31)
  ******************************************************************************/
 int plat_setup_psci_ops(uintptr_t sec_entrypoint,
-			const struct plat_psci_ops **);
+			const struct plat_psci_ops **psci_ops);
 const unsigned char *plat_get_power_domain_tree_desc(void);
 
 /*******************************************************************************
@@ -311,7 +311,7 @@
 void plat_psci_stat_accounting_stop(const psci_power_state_t *state_info);
 u_register_t plat_psci_stat_get_residency(unsigned int lvl,
 			const psci_power_state_t *state_info,
-			int last_cpu_index);
+			int last_cpu_idx);
 plat_local_state_t plat_get_target_pwr_state(unsigned int lvl,
 			const plat_local_state_t *states,
 			unsigned int ncpu);