wayland: use correct enum type for tablet pad
Fixes a compile warning. The two enums are identical, so no functional change intended.
For reference the two generated enums look like this:
enum zwp_tablet_tool_v2_button_state {
ZWP_TABLET_TOOL_V2_BUTTON_STATE_RELEASED = 0,
ZWP_TABLET_TOOL_V2_BUTTON_STATE_PRESSED = 1,
};
enum zwp_tablet_pad_v2_button_state {
ZWP_TABLET_PAD_V2_BUTTON_STATE_RELEASED = 0,
ZWP_TABLET_PAD_V2_BUTTON_STATE_PRESSED = 1,
};
Edited by Thomas H.P. Andersen