on RPI2/evbarmv7hf - can't find builtin dependency `i2c_bitbang'

[Michael Plass <mfpnb%plass-family.net@localhost>]

Running on a recent current (source of 2016/06/15 05:01:58), I'm seeing
dmesg warnings about i2c_bitbang:

NetBSD 7.99.30 (RPI2) #0: Fri Jun 17 13:50:22 PDT 2016
       michael@mipi:/usr/obj/sys/arch/evbarm/compile/RPI2
total memory = 944 MB
avail memory = 925 MB
sysctl_createv: sysctl_create(machine_arch) returned 17
timecounter: Timecounters tick every 10.000 msec
WARNING: module error: can't find builtin dependency `i2c_bitbang'
mainbus0 (root)
cpu0 at mainbus0 core 0: 600 MHz Cortex-A7 r0p5 (Cortex V7A core)
cpu0: DC enabled IC enabled WB disabled EABT branch prediction enabled
...

likely related to the recent changes to make a loadable module of i2c_bitbang?

Also, the message comes out a second time later on, but there seems to
be a newline missing:

...
uhub0 at usb0: vendor 0000 DWC2 root hub, class 9/0, rev 2.00/1.00, addr 1
uhub0: 1 port with 1 removable, self powered
ld0 at sdmmc0: <0x03:0x5344:SU08G:0x80:0x611ed633:0x0e5>
ld0: 7580 MB, 3850 cyl, 64 head, 63 sec, 512 bytes/sect x 15523840 sectors
IPsec: Initialized Security Association Processing.
WARNING: module error: can't find builtin dependency `i2c_bitbang'ld0: 4-bit width,
High-Speed/SDR25, 50.000 MHz
uhub1 at uhub0 port 1: vendor 0424 product 9514, class 9/0, rev 2.00/2.00, addr 2
uhub1: multiple transaction translators
uhub1: 5 ports with 4 removable, self powered
...

Thanks,
- Michael