pinconf-generic: add drive strength to debugfs output

Add the drive strength pinconf to debugfs output (with the unit "mA").

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Git-commit: 73ae368cd309dae277b66444d471
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git


Change-Id: I699fc63c0b71555b192bba76045c7024abfe5a4c
Signed-off-by: Hanumant Singh <hanumant@codeaurora.org>