defconfig: msm: enable cpusets support for 8909w

Cpusets are enabled in perf builds but disabled in debug builds.
Enable them in debug build as well to make debug and perf configs
in sync.

Change-Id: I8bb27f4434c58796f54a7fe464a8d4322cc1f756
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>