wifi: rtw89: wow: change type of WoWLAN pattern mask to __le32

wifi: rtw89: wow: change type of WoWLAN pattern mask to __le32

The WoWLAN pattern mask is generated in byte stream, and actually firmware
expects to see the same byte stream too. Since these byte stream is sent
to firmware with 32-bit stream in little-endian order. Change to mask
to __le32, and just do assignment instead of le32 conversion to wkfm fields
of H2C command.

For little-endian machine, it doesn't change logic at all.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251229030926.27004-3-pkshih@realtek.com