The routine restore_fpu() contains two bugs:

1) it reads more bytes from the array ThreadInfoArm::fpstate::vfp_regs
   than it actually containes;

2) the value of the field ThreadInfoArm::fpstate::fpscr is dropped
   on the floor.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>