Log Message:
 Update intel-microcode-netbsd to 20180425.

== 20180425 Release ==
-- Updates upon 20180312 release --
Processor             Identifier     Version       Products
Model        Stepping F-MO-S/PI      Old->New
---- updated platforms ------------------------------------
GLK          B0       6-7a-1/01 0000001e->00000022 Pentium Silver N/J5xxx, \ 
Celeron N/J4xxx
---- removed platforms ------------------------------------
BDX-ML       B/M/R0   6-4f-1/ef 0b000021           Xeon E5/E7 v4; Core i7-69xx/68xx

-- Special release with caveats --
BDX-ML       B/M/R0   6-4f-1/ef           0b00002c Xeon E5/E7 v4; Core i7-69xx/68xx