MFH: r501203

emulators/rpcs3: unbreak EVDEV after r487789

In file included from rpcs3/rpcs3qt/pad_settings_dialog.cpp:24:
In file included from rpcs3/evdev_joystick_handler.h:7:
/usr/local/include/libevdev-1.0/libevdev/libevdev.h:30:10: fatal error: 'linux/input.h' file not found
#include <linux/input.h>

^~~~~~~~~~~~~~~

Approved by: ports-secteam blanket