Enable drivers for PMICs and MUICs present on Exynos-based devices:
- max14577: charger, fuel gauge (max17040), regulator,
  used on: Gear 1, Gear 2,
- max77693: charger, fuel gauge (max17042),
  used on: Trats2,
- s5m/s2mps: RTC, clock,
  used on: Arndale, Arndale Octa, Gear 1, Gear 2

This allows full usage of charging stack on these devices along with RTC
and 32 kHz clocks.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
[kgene@kernel.org: savedefconfig]
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>