Remove the unnecessary initialization of "dev_t bsr_dev" since it's
subsequently used in an "alloc_chrdev_region()" call which uses that
variable in an output-only fashion.
Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>