lib: Allow compile-testing of parman

This allows to enable and run the accompanying test (test_parman)
without dependencies on other users of parman.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

lib/Kconfig

@@ -551,7 +551,7 @@ config SBITMAP
 	bool
 
 config PARMAN
-	tristate
+	tristate "parman" if COMPILE_TEST
 
 config PRIME_NUMBERS
 	tristate