ARM SCPI Sensors were merged for v4.4 and they are defined in the Juno
dts.  Enable it in the defconfig to get them registered automatically in
Juno by default.
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>