meson: add dependency for libmapper
In order to allow 'libmapper' to be picked up as a meson subproject,
we need to declare the dependency. Enabling this allows a trivial
wrap file such as the following to allow `dependency('mapper')` to
resolve in a wrap-build:
```
$ cat subprojects/phosphor-objmgr.wrap
[wrap-git]
url = https://github.com/openbmc/phosphor-objmgr
revision = HEAD
[provide]
mapper = mapper_dep
```
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I45d8d3f69fd284bfe727e1b8e94fb42a6158a1b5
1 file changed