src-test/sys/dev/fdt/simple_mfd.h, branch main

src-test/sys/dev/fdt/simple_mfd.h, branch main FreeBSD source tree https://cgit-dev.freebsd.org/src-test/atom?h=main 2019-07-02T08:47:18Z Extend simple_mfd driver to expose a syscon interface if 2019-07-02T08:47:18Z Ganbold Tsagaankhuu ganbold@FreeBSD.org 2019-07-02T08:47:18Z urn:sha1:73155b4327c68d62e2ef4d340108cdd7c0102657 that node is also compatible with syscon. For instance, Rockchip RK3399's GRF (General Register Files) is compatible with simple-mfd as well as syscon and has devices like usb2-phy, emmc-phy and pcie-phy etc. under it. Reviewed by: manu