zynqmp: pm: Update return type in query functions

In pm_query_data() function return type is stored in response so
there is no use of return type. Update return type of function
pm_query_data() from enum pm_ret_status to void. Similarly
update return type of pm_api_clock_get_name() and
pm_api_pinctrl_get_function_name() functions.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Change-Id: Id811926f0b4ebcc472480bb94f3b88109eb036cd
diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
index ff66d3f..930e470 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
@@ -151,11 +151,8 @@
 				      unsigned int parent_id);
 enum pm_ret_status pm_clock_getparent(unsigned int clock_id,
 				      unsigned int *parent_id);
-enum pm_ret_status pm_query_data(enum pm_query_id qid,
-				 unsigned int arg1,
-				 unsigned int arg2,
-				 unsigned int arg3,
-				 unsigned int *data);
+void pm_query_data(enum pm_query_id qid, unsigned int arg1, unsigned int arg2,
+		   unsigned int arg3, unsigned int *data);
 enum pm_ret_status pm_sha_hash(uint32_t address_high,
 				    uint32_t address_low,
 				    uint32_t size,