mraa: Define PYTHON_LIBRARY and PYTHON_INCLUDE_DIR

Otherwise it starts to look into native sysroot which we really do not
want

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/mraa/mraa_git.bb

@@ -22,6 +22,8 @@ DEPENDS += "json-c"
 
 EXTRA_OECMAKE_append = " -DINSTALLTOOLS:BOOL=ON -DFIRMATA=ON -DCMAKE_SKIP_RPATH=ON \
                          -DPYTHON3_PACKAGES_PATH:PATH=${baselib}/python${PYTHON_BASEVERSION}/site-packages \
+                         -DPYTHON_LIBRARY=${STAGING_LIBDIR}/lib${PYTHON_DIR}${PYTHON_ABI}.so \
+                         -DPYTHON_INCLUDE_DIR=${STAGING_INCDIR}/${PYTHON_DIR}${PYTHON_ABI} \
                        "
 
 # Prepend mraa-utils to make sure bindir ends up in there