Revert "fpga: disable KUnit test suites when module support is enabled"

This reverts commit a3fad2e9.

The core components of the subsystem no longer assume that low-level
modules register a driver for the parent device and rely on its owner
pointer to take the module's refcount. KUnit test suites can now be safely
re-enabled with loadable module support.
Signed-off-by: Marco Pagani <marpagan@redhat.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20240604102536.59010-1-marpagan@redhat.comSigned-off-by: Xu Yilun <yilun.xu@linux.intel.com>

drivers/fpga/tests/Kconfig

 config FPGA_KUNIT_TESTS
-	bool "KUnit test for the FPGA subsystem" if !KUNIT_ALL_TESTS
-	depends on FPGA=y && FPGA_REGION=y && FPGA_BRIDGE=y && KUNIT=y && MODULES=n
+	tristate "KUnit test for the FPGA subsystem" if !KUNIT_ALL_TESTS
+	depends on FPGA && FPGA_REGION && FPGA_BRIDGE && KUNIT=y
 	default KUNIT_ALL_TESTS
         help
           This builds unit tests for the FPGA subsystem