tty: msm_geni: Do not place msm_geni_console_setup under __init

msm_geni_console_setup() can be potentially called from the driver's
probe via uart_add_one_port(). Since it's placed under __init, the
function would be discarded as soon as the module_init portion of the
driver completes, and when called during probe, it causes an instruction
abort. As a result, move the msm_geni_console_setup() out of __init.

Change-Id: I1019796185c3443bd6156030020eb5274bdfa178
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>