ALSA: Allow const arrays for legacy resource management helpers

Declare the arrays passed to the helper functions for legacy resources
(mostly for ISA drivers) as const, so that each caller can make its
static data as const for minor optimizations, too.

Link: https://lore.kernel.org/r/20200105144823.29547-2-tiwai@suse.de


Signed-off-by: Takashi Iwai <tiwai@suse.de>