LF-4481-03 arm64: mxc: select the tpm timer by default

commit 5381c130e1ac0436ce2de18bdf4bb6b68ef23bc2 from
https://github.com/nxp-imx/linux-imx



Select the tpm timer by default for ARMv8 based i.MX SoC.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>