eglibc-initial-2.16: add kconfig-frontends-native to depends

eglibc-initial-2.16: add kconfig-frontends-native to depends

* fixes:
  | make[1]: Entering directory `/OE/shr-core/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-initial-2.16-r8+svnr20393/eglibc-2_16/libc'
  | make[1]: *** No rule to make target `/OE/shr-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/conf', needed by `config'.  Stop.
  | make[1]: Leaving directory `/OE/shr-core/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-initial-2.16-r8+svnr20393/eglibc-2_16/libc'

* it's because, eglibc-initial.inc overwrites DEPENDS from eglibc_2.16.bb
  $ grep DEPENDS eglibc_2.16.bb
  DEPENDS += "gperf-native kconfig-frontends-native"
  $ grep DEPENDS eglibc-initial.inc
  DEPENDS = "linux-libc-headers virtual/${TARGET_PREFIX}gcc-initial"

  and it's included after eglibc_2.16.bb
  $ head -n 3 eglibc-initial_2.16.bb
  require eglibc_${PV}.bb
  require eglibc-initial.inc

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>