arm64: defconfig: Enable hung tasks detection

Enable hung task detection for Lahaina platform to detect the
tasks that are stuck in uninterruptible "D" state indefinitely.

Change-Id: Ieb18c8452b3643c57d11ba697a359d5beb7d7255
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>