NetBSD PR #57821 affects port-i386 as well

Just a FYI regarding an open PR on the amd64 port that appears to
affect i386 as well.

NetBSD PR #57821: On some machines, NetBSD/amd64 cannot get correct
century data http://gnats.netbsd.org/57821

I'm seeing pretty much the same behavior on an old 32 bit HP
SLimline; the pertinent dmesg output:

 [   5.5878455] WARNING: NVRAM century is 16 but RTC year is 2025

where "16" varies with each boot.  Booting with 'netbsd -2' (ACPI
disabled) fixes the issue but of course introduces other issues.

Haven't tried the /sys/arch/x86/isa/rtc.c patch yet but I suspect
it would work.  I didn't want to file a new PR and I couldn't see
a way to add feedback to the forementioned PR so thought I'd post
here where perhaps a developer could add a comment.

-B

--
System info:
 $ uname -a
 NetBSD slimline 10.1_STABLE NetBSD 10.1_STABLE (GENERIC) #0: \
  Fri Dec 20 18:31:34 UTC 2024 \
  [email protected]:/usr/src/sys/arch/i386/compile/GENERIC i386

 $ sysctl machdep.dmi.
 machdep.dmi.system-vendor = HP Pavilion 061
 machdep.dmi.system-product = ER191AA-ABA s7421c
 machdep.dmi.system-version = 0nx1104RE101ONYX200
 machdep.dmi.bios-vendor = American Megatrends Inc.
 machdep.dmi.bios-version = 3.06
 machdep.dmi.bios-date = 20051028
 machdep.dmi.board-vendor = ASUSTeK Computer INC.
 machdep.dmi.board-product = Onyx2
 machdep.dmi.board-version = 1.xx
 machdep.dmi.chassis-vendor = Chassis Manufacture
 machdep.dmi.chassis-type = Chassis Serial Number
 machdep.dmi.chassis-version = Chassis Version
 machdep.dmi.chassis-asset-tag = Asset-1234567890
 machdep.dmi.processor-vendor = Intel
 machdep.dmi.processor-version = Intel(R) Pentium(R) M processor 2.00GHz
 machdep.dmi.processor-frequency = 2000 MHz