defconfig: kona: Enable HARDIDLETIMER

For fast dormancy feature, network idle timer support is required
where in timer expires even in power colapse and which triggers a
sysfs notification. If a matching packet is received then timer is
reset. This support is required in the kernel so enabling the config.

CRs-Fixed: 2069923
Change-Id: I959d035011304fe2dd3465deb337b2087634cca2
Acked-by: Manoj Basapathi <manojbm@qti.qualcomm.com>
Signed-off-by: Devi Sandeep Endluri V V <dendluri@codeaurora.org>