The warnings are really harmless but annoying.  Since they are only
about debug prints, and it's at most 32bit DMA, let's just cast to
unsigned long.

  sound/pci/lx6464es/lx6464es.c:457:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  sound/pci/lx6464es/lx_core.c:1195:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
Signed-off-by: Takashi Iwai <tiwai@suse.de>