Since MMC core handles runtime PM reference counting, we can avoid doing
redundant runtime PM work in the driver. That means the only thing
commit 5b4258f6 ("misc: rtsx: rts5249 support runtime PM") misses is
to always enable runtime PM, to let its parent driver enable ASPM in the
runtime idle routine.

Fixes: 7499b529 ("mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM")
Reviewed-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NKai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20220216055435.2335297-1-kai.heng.feng@canonical.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>