mfd: palmas PMIC device support Kconfig

mfd: palmas PMIC device support Kconfig

Add the new palmas MFD to Kconfig and Makefile

Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit c948ef3ae71c18c1079333b65d6887ceb4577618)

Change-Id: I779faf7f0e110ba80761136eebeb7193b1826b4f
Reviewed-on: http://git-master/r/111486
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Pradeep Goudagunta <pgoudagunta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>