power: smblite-lib/smb5-lib: Fix partner registration for microusb

Typec attach_detach handler gets executed which is not
expected for micro-usb design. Return from type-C attach-detach
handler for micro-usb stack.

Change-Id: Ia7bfe6b407757663be4f7d143ccd88a60079657b
Signed-off-by: Kavya Nunna <knunna@codeaurora.org>
Signed-off-by: Ashish Chavan <ashichav@codeaurora.org>