sunxi: clocks: clock_get_pll5 prototype and coding style

"sunxi: remove magic numbers from clock_get_pll{5,6}" left the clock_get_pll5
prototpye after removing the function itself.

also the prevailing style in clock_sun?i.h is for spaces around "<<", so update
the new #defines to match.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>