src/sys/dev/uart/uart_dev_mu.c, branch releng/12.3

src/sys/dev/uart/uart_dev_mu.c, branch releng/12.3 FreeBSD source tree Add a driver for the BCM2835 Mini-UART as seen on the RPi3 2018-06-12T13:26:31+00:00 Diane Bruce db@FreeBSD.org 2018-06-12T13:26:31+00:00 5bede50958ba980f04505cbdc9c363245e687883 Reviewed by: andrew Approved by: andrew Differential Revision: https://reviews.freebsd.org/D15684

Reviewed by:	andrew
Approved by:	andrew
Differential Revision:	https://reviews.freebsd.org/D15684