K 10
svn:author
V 8
cperciva
K 8
svn:date
V 27
2019-03-22T06:28:37.108691Z
K 7
svn:log
V 407
Initialize uart_bus_space_mem.

This value was being used uninitialized, resulting in predictable issues
on systems with memory-mapped UART registers.

A case could be made that memmap_bus should be declared in a header
rather than being declared in each .c file which needs to refer to it,
but that's a broader style question.

This commit unbreaks hw.uart.console="mm:..." on ARM64.

Submitted by:	Greg V

END