build: use PKG_CHECK_MODULES for phosphor-dbus-interfaces

For the phosphor-dbus-interfaces check, use PKG_CHECK_MODULES.

The CI wasn't checking for this macro to know to pull phosphor-dbus-interfaces
Also, for consistency.  There is not an advantage to using this instead of the
regular package script.

Change-Id: I3c7f2dc4830d461078a1fd35b7ecd72c7260b3b2
Signed-off-by: Patrick Venture <venture@google.com>
1 file changed