image_types.bbclass: rebuild .wks file when .wks.in changes
WKS_FILE(S) can refer to .wks.in files which get expanded during the
build by do_write_wks_template. The actual content of the .wks.in file
gets added to the recipe meta data during parsing, and thus we need to
ensure that the recipe gets re-parsed when the file changes.
This fixes two related problems:
- editing the .wks.in file and rebuilding an image did not recreate
the image unless something else changed or "bitbake -c clean" was
used explicitly
- when forcing a rebuild, the cached meta data and the actual one
do not match, leading to "ERROR: Taskhash mismatch ... for ....bb.do_write_wks_template"
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
