intel: Enable EMAC PHY in Intel FPGA platform

This initializes the EMAC PHY in both Stratix 10 and Agilex,
without this, EMAC PHY wouldn't work correctly.

Change-Id: I7e6b9e88fd9ef472884fcf648e6001fcb7549ae6
Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
diff --git a/plat/intel/soc/common/include/socfpga_system_manager.h b/plat/intel/soc/common/include/socfpga_system_manager.h
index 68e30b8..76565bc 100644
--- a/plat/intel/soc/common/include/socfpga_system_manager.h
+++ b/plat/intel/soc/common/include/socfpga_system_manager.h
@@ -13,6 +13,11 @@
 
 #define SOCFPGA_SYSMGR_SDMMC				0x28
 
+#define SOCFPGA_SYSMGR_EMAC_0				0x44
+#define SOCFPGA_SYSMGR_EMAC_1				0x48
+#define SOCFPGA_SYSMGR_EMAC_2				0x4c
+#define SOCFPGA_SYSMGR_FPGAINTF_EN_3			0x70
+
 #define SOCFPGA_SYSMGR_NOC_TIMEOUT			0xc0
 #define SOCFPGA_SYSMGR_NOC_IDLEREQ_SET			0xc4
 #define SOCFPGA_SYSMGR_NOC_IDLEREQ_CLR			0xc8