Merge tag 'extcon-next-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git...

Chanwoo writes:

Update extcon for 4.20

Detailed description for this pull request:
1. Add SPDX license identifiers for Maxim and Intel extcon drivers
2. Clean-up extcon-intel-cht-wc.c driver without operation changes
3. Fix build warning of extcon core and use kasprintf instead of snprintf

* tag 'extcon-next-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon:
  extcon: int3496: Convert to use SPDX identifier
  extcon: cht-wc: Convert to use SPDX identifier
  extcon: cht-wc: Correct USBID bit field handling
  extcon: cht-wc: Fix definition names according to spec
  extcon: cht-wc: Return from default case to avoid warnings
  extcon: Switch to use kasprintf() instead of open coded
  extcon: Make static analyzer happy about union assignment
  extcon: maxim: Add SPDX license identifiers