orinoco: address leading and trailing whitespace

Remove the following checkpatch errors from orinoco.c

ERROR: trailing whitespace
ERROR: code indent should use tabs where possible
WARNING: suspect code indent for conditional statements
Signed-off-by: NDavid Kilroy <kilroyd@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>