msm: mhi_dev: Move PCIE-EP and MHI drivers to subsys_init

Move PCIE EP and MHI drivers to subsys init from module init to
allow dependent drivers to be able to use MHI driver services.

Signed-off-by: Siva Kumar Akkireddi <sivaa@codeaurora.org>
Change-Id: I4888b61d841919336c40084ebd25285dd59621f6
2 files changed