runqemu: don't set KERNEL for wic images
Wic images should be boot as is, without pointing qemu to the kernel
binary. Current code doesn't use kernel, but sets KERNEL variable and
shows kernel path in the console output. This can confuse users.
Changed runqemu and runqemu-internal code to avoid setting KERNEL
variable and show kernel path.
(From OE-Core rev:
474caa7ed5ff05caa5d49d270b283882fa616ed1)
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
