misc: rtsx_pci: Add separate CD/WP pin polarity reversal support

misc: rtsx_pci: Add separate CD/WP pin polarity reversal support

Previously, the Card Detect (CD) and Write Protect (WP) pins shared the
same reverse polarity setting in the configuration space. This meant both
signals were reversed together, without the ability to configure them
individually.

This patch introduces two new parameters:
sd_cd_reverse_en – enable reverse polarity for the CD pin.
sd_wp_reverse_en – enable reverse polarity for the WP pin.

With this change, the controller can now support:
1.Reversing both CD and WP pins together (original behavior).
2.Reversing CD and WP pins separately (newly added behavior), if
supported by the configuration space.

This provides greater flexibility when dealing with devices that have
independent polarity requirements for CD and WP pins.

Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20250812063521.2427696-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>