staging: rts5208: spi.c: fix codestyle error in dynamic debug code

reduce number of spaces in dev_dbg() code
format the commit and changelog more clearly

Signed-off-by: Srivathsan Sivakumar <sri.skumar05@gmail.com>
Link: https://lore.kernel.org/r/Yo3HOPPKnWHez7ES@Sassy


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>