Make prime number generator independently selectable from
kconfig. This allows us to enable CONFIG_PRIME_NUMBERS=m
and run the tools/testing/selftests/lib/prime_numbers.sh
without other DRM selftest modules.

Signed-off-by: Masami Hiramatsu <[email protected]>
---
 lib/math/Kconfig |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/math/Kconfig b/lib/math/Kconfig
index 15bd50d92308..f19bc9734fa7 100644
--- a/lib/math/Kconfig
+++ b/lib/math/Kconfig
@@ -6,7 +6,12 @@ config CORDIC
          calculations are in fixed point. Module will be called cordic.
 
 config PRIME_NUMBERS
-       tristate
+       tristate "Simple prime number generator for testing"
+       help
+         This option provides a simple prime number generator for test
+         modules.
+
+         If unsure, say N.
 
 config RATIONAL
        bool

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