amba: Defer device peripheral ID read

To be able to read peripheral ID during device create time
bus code have turn on device interface clock, but this
clock could be unavailable at this time. Fix this by defer
device ID read until driver match time.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>