linux-yocto: re-enable systemtap

linux-yocto: re-enable systemtap

[
  Author: Tom Zanussi <tom.zanussi@intel.com>
  Date:   Fri Sep 2 23:45:12 2011 -0500

    meta: re-enable systemtap feature for linux-yocto

    Re-enable the 'systemtap feature' that turns on the kernel options required
    for systemtap, a system-wide tracing tool.

    Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
]

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>