fpga manager: Add hardware dependency to Zynq driver

The Zynq FPGA manager driver serves no purpose on other architectures
so hide it unless build-testing.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Acked-by: Alan Tull <atull@opensource.altera.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/fpga/Kconfig

@@ -21,6 +21,7 @@ config FPGA_MGR_SOCFPGA
 
 config FPGA_MGR_ZYNQ_FPGA
 	tristate "Xilinx Zynq FPGA"
+	depends on ARCH_ZYNQ || COMPILE_TEST
 	depends on HAS_DMA
 	help
 	  FPGA manager driver support for Xilinx Zynq FPGAs.