refactor(xilinx): move versal files to common place

Moved necessary files to common place so that it can be used for
Versal NET.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I611fa849207b082e6599acfb65c55d27b9c99435
diff --git a/plat/xilinx/common/include/pm_svc_main.h b/plat/xilinx/common/include/pm_svc_main.h
new file mode 100644
index 0000000..1a27bdf
--- /dev/null
+++ b/plat/xilinx/common/include/pm_svc_main.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved.
+ * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PM_SVC_MAIN_H
+#define PM_SVC_MAIN_H
+
+#include <pm_common.h>
+
+int32_t pm_setup(void);
+uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
+			uint64_t x4, const void *cookie, void *handle,
+			uint64_t flags);
+
+int32_t pm_register_sgi(uint32_t sgi_num, uint32_t reset);
+#endif /* PM_SVC_MAIN_H */