Input: tests - modular KUnit tests should not depend on KUNIT=y

While KUnit tests that cannot be built as a loadable module must depend
on "KUNIT=y", this is not true for modular tests, where it adds an
unnecessary limitation.

Fix this by relaxing the dependency to "KUNIT".

Fixes: fdefcbdd6f361841 ("Input: Add KUnit tests for some of the input core helper functions")
Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Javier Martinez Canillas <[e-mail]>
Link: https://lore.kernel.org/r/483c4[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/Kconfig

···
 
 config INPUT_KUNIT_TEST
 	tristate "KUnit tests for Input" if !KUNIT_ALL_TESTS
-	depends on INPUT && KUNIT=y
+	depends on INPUT && KUNIT
 	default KUNIT_ALL_TESTS
 	help
 	  Say Y here if you want to build the KUnit tests for the input