defconfig: arm64: msm: Enable MSM_DEBUG_LAR_UNLOCK for MSM8953

Enable MSM_DEBUG_LAR_UNLOCK for MSM8953. This allows unlocking
Core Debug lock to allow capture of upper 32 bits of program
counter at the time of system dump.

CRs-Fixed: 2209256
Change-Id: Ic68e8af60d251b8916dbbe14ea2b2c1bbd96929a
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>