mmc: core: Add definitions for SD UHS-II cards

mmc: core: Add definitions for SD UHS-II cards

Add UHS-II specific data structures for commands and defines for
registers, as described in Part 1 UHS-II Addendum Version 1.01.

UHS-II related definitions are listed below:
  1. UHS-II card capability: sd_uhs2_caps{}
  2. UHS-II configuration: sd_uhs2_config{}
  3. UHS-II register I/O address and register field definitions: sd_uhs2.h

Signed-off-by: Jason Lai <jason.lai@genesyslogic.com.tw>
Signed-off-by: Victor Shih <victor.shih@genesyslogic.com.tw>
Link: https://lore.kernel.org/r/20240913102836.6144-6-victorshihgli@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>