staging: r8188eu: use u8, u16 in issue_action_BA prototype

Use u8 and u16 in the issue_action_BA prototype. The code expects these
parameters to be exactly 8 and 16 bits wide.

Tested-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220602193726.280922-12-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>