Add proper gpio and clock support
correct some pin numbering. While here switch to my freebsd mail address in the copyright. MFC after: 3 days
For now clocks, GPIO, Pinmux, UART, MMC, EHCI is supported. Tested on OrangePi-One Reviewed by: jmcneill Approved by: cognet (mentor) Differential Revision: https://reviews.freebsd.org/D6311