Blackfin arch: Convert Blackfin GPIO driver to use common gpiolib/gpiochip infrastructure

 - This patch adds support for ARCH_WANT_OPTIONAL_GPIOLIB.
 - It may be changed in future to ARCH_REQUIRE_GPIOLIB.
 - Change GPIO_BANK_NUM use DIV_ROUND_UP( , ) macro

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 19b43f37e1a..004c06ce319 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -26,6 +26,7 @@ config BLACKFIN
         default y
         select HAVE_IDE
         select HAVE_OPROFILE
+        select ARCH_WANT_OPTIONAL_GPIOLIB
 
 config ZONE_DMA
         bool