Merge tag 'tags/isa-void-remove-callback' into for-next

isa: Make the remove callback for isa drivers return void

Link: https://lore.kernel.org/r/20210122092449.426097-1-uwe@kleine-koenig.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --cc sound/isa/ad1848/ad1848.c
Simple merge

diff --cc sound/isa/cs423x/cs4231.c
Simple merge

diff --cc sound/isa/cs423x/cs4236.c
Simple merge

diff --cc sound/isa/es1688/es1688.c
Simple merge