bluez4: add dependency on libcheck to enable test modules

bluez4: add dependency on libcheck to enable test modules

* The later versions of bluez such as 4.98 require libcheck
  in order to build the test packages as enabled by the
  --enable-test option passed in EXTRA_OECONF.
* Failure to have the libcheck package available results in the
  configure script ignoring the --enable-test option and not
  building the test modules.
* Adding libcheck, which is greater than the minimum required
  version of the check library of 0.9.6 allows building the
  test modules.
* Build tested for am335x-evm MACHINE type and run time tested
  by back porting this fix to the oe-classic and arago setup
  and booting on am335x-evm.

(From OE-Core rev: 6e5fc682a4d464f62fbba12e61a8bc8e97ff92e2)

Signed-off-by: Chase Maupin <Chase.Maupin@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>