nfc: add configuration for out of tree build

The nfc and ese drivers are built as modules
fixes for st21nfc.c are required to build it on LLVM

Bug: 168350321
Signed-off-by: Alisher Alikhodjaev <alisher@google.com>
Change-Id: Ifa88b8e243de20c6afda8a1350a4c79c417df4cf
3 files changed
tree: 603b8fb84819de8ab6fe6e96bc2502bebb188d38
  1. ese/
  2. Kconfig
  3. Makefile
  4. st21nfc.c
  5. st21nfc.h