spi: zynqmp: Fix build break

Missing include:
drivers/spi/spi-zynqmp-gqspi.c:1025:13: error: implicit declaration of
  function 'zynqmp_pm_get_eemi_ops'; did you mean
  'zynqmp_process_dma_irq'? [-Werror=implicit-function-declaration]

Fixes: 3d03137864 ('drivers: Defer probe if firmware is not ready')
Cc: Rajan Vaja <rajan.vaja@xilinx.com>
Cc: Jolly Shah <jollys@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

drivers/spi/spi-zynqmp-gqspi.c

@@ -14,6 +14,7 @@
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
+#include <linux/firmware/xlnx-zynqmp.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>