lguest: Fix in/out emulation
lguest: Fix in/out emulation

We were blatting too much of the register.  Linux didn't care, but in
theory it might.

Reported-by: Jonas Maebe <63ce0f55a5b3d859d4b9031815f306d7be507810@elis.ugent.be>
Signed-off-by: Rusty Russell <df9728c9e5104131c08c7adb03af425394842596@rustcorp.com.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas