pango: fix dependencies to avoid build issue

pango: fix dependencies to avoid build issue

this commit avoids this build issue:

| /srv/home/nitin/builds/build-gcc47/tmp/sysroots/x86_64-linux/usr/libexec/i586-poky-linux/gcc/i586-poky-linux/4.7.1/ld: cannot find -lelf
| collect2: error: ld returned 1 exit status
...
| make: *** [all] Error 2
| ERROR: oe_runmake failed
NOTE: package pango-1.28.4-r7: task do_compile: Failed

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>