HID: amd_sfh: Fix implicit declaration error on i386

Add depended header file to fix error on i386 due to implicit
declaration of function ‘writeq’.

Fixes: 93ce5e02 ("HID: amd_sfh: Implement SFH1.1 functionality")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>