esoc: Add module parameters to control driver actions

In order to control some parameters while debugging, such
as, change the number of PON attempts, change the action to
be taken in case the external modem doesn't boot, and so on,
add module parameters.

Change-Id: I508d795a8684533302d8c9668693b630029cecb4
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>