zynqmp:pm: Adds new zynqmp-pm api SMC call for efuse

This patch adds new api to access zynqmp efuse memory

Signed-off-by: VNSL Durga <vnsl.durga.challa@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Change-Id: I0971ab6549552a6f96412431388d19b822db00ab
diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
index 60fc303..b3ebb27 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
@@ -196,5 +196,7 @@
 
 enum pm_ret_status pm_pll_set_mode(enum pm_node_id nid, enum pm_pll_mode mode);
 enum pm_ret_status pm_pll_get_mode(enum pm_node_id nid, enum pm_pll_mode *mode);
+enum pm_ret_status pm_efuse_access(uint32_t address_high,
+				   uint32_t address_low, uint32_t *value);
 
 #endif /* PM_API_SYS_H */