ucode: update to latest HEAD

ucode: update to latest HEAD

b610860 Merge pull request #223 from jow-/nl80211-add-eht-attributes
4e0456b nl80211: add EHT mac/phy capabilities
c938ee9 Merge pull request #218 from jonasjelonek/add-ioctl
56ebeec fs: add ioctl() file method
d0f423b Merge pull request #221 from mikma/fix-getenv
86f1121 lib: test if call to getenv() destroys environ
7af80d9 lib: use copy of environ pointer in getenv()
6ea37c8 ci: bump upload-artifact to v3
26d7292 Merge pull request #214 from jow-/ucode-test-runner
fbabec4 tests: replace test runner shell script with ucode implementation
e391ef5 main: prevent invalid memory access when executing empty stdin
b391fd7 Merge pull request #211 from jow-/hwsim-support
bc13278 nl80211: support the MAC80211_HWSIM netlink protocol family
f5b5a58 nl80211: drop unused structure members from connection context
f6ea6fc nl80211: support conversion from/to struct array attributes
115a84f nl80211: gracefully handle illegal netlink error code

Signed-off-by: John Crispin <john@phrozen.org>