Staging: phison: add driver to the build system

Cc: Evan Ko <evan_ko@phison.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index c2accb8..29dfff7 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -103,5 +103,7 @@
 
 source "drivers/staging/b3dfg/Kconfig"
 
+source "drivers/staging/phison/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING