Merge tag 'mvebu-pinctrl-3.15' of git://git.infradead.org/linux-mvebu into pinctrl-mvebu

mvebu pinctrl changes for v3.15

 - various cleanup and refactorization
 - add drivers for the Armada 375, 380, and 385 SoCs
 - prepare dove for SoC code moving into mach-mvebu
 - DT documentation updates