qemu with hax to log dma reads & writes jcs.org/2018/11/12/vfio

trivial: Make bios files and source files non-executable

These files can not be executed on the host, so they should not be
marked as executable.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

block/blkreplay.c
pc-bios/hppa-firmware.img
pc-bios/palcode-clipper
pc-bios/u-boot-sam460-20100605.bin
pc-bios/u-boot.e500
replay/replay-char.c