defconfig: 8084: enable coresight event module

Set config item to build the coresight event dynamically loadable
kernel module which can be used to abort tracing on a prefetch,
data or undefined instruction abort. This helps to record the
instruction that caused the abort and prevent subsequent trace
data from overwriting this instruction in the trace.

Change-Id: I0b2558c0dbe0fe9df0d079094447b5071b137a2c
Signed-off-by: Pushkar Joshi <pushkarj@codeaurora.org>