firmware: zynqmp: create firmware header

New firmware header to place firmware specific macro and function
declarations. The patch also moves the macros defining PM operations as
well as some helper macros.

Signed-off-by: Ibai Erkiaga <ibai.erkiaga-elorza@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/drivers/fpga/zynqmppl.c b/drivers/fpga/zynqmppl.c
index f6d9d50..6168626 100644
--- a/drivers/fpga/zynqmppl.c
+++ b/drivers/fpga/zynqmppl.c
@@ -8,6 +8,7 @@
 #include <console.h>
 #include <common.h>
 #include <zynqmppl.h>
+#include <zynqmp_firmware.h>
 #include <linux/sizes.h>
 #include <asm/arch/sys_proto.h>
 #include <memalign.h>