spi: spi-zynq-qspi: add spi-mem to driver kconfig dependencies

Zynq QSPI driver has been converted to use spi-mem framework so
add spi-mem to driver kconfig dependencies.

Fixes: 67dca5e ("spi: spi-mem: Add support for Zynq QSPI controller")
Signed-off-by: Amit Kumar Mahapatra <[email protected]>
Signed-off-by: Radhey Shyam Pandey <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Amit Kumar Mahapatra

drivers/spi/Kconfig

@@ -1158,6 +1158,7 @@ config SPI_XTENSA_XTFPGA
 config SPI_ZYNQ_QSPI
 	tristate "Xilinx Zynq QSPI controller"
 	depends on ARCH_ZYNQ || COMPILE_TEST
+	depends on SPI_MEM
 	help
 	  This enables support for the Zynq Quad SPI controller
 	  in master mode.