K 10
svn:author
V 3
ian
K 8
svn:date
V 27
2019-12-25T17:26:51.680553Z
K 7
svn:log
V 531
For riscv kernel builds, add -N to LDFLAGS instead of replacing the
SYSTEM_LD variable.  This avoids duplicating the contents of SYSTEM_LD
from kern.pre.mk just to add the -N flag to it.  If the basic linker command
ever needs to be changed, this will be one less place that has to be found
and fixed.

Some testing by kp@ indicates that the -N flag may not be needed at all,
so a comment to that effect is also added, and the -N flag may be removed
in a followup commit.

Differential Revision:	https://reviews.freebsd.org/D22920

END