intel_adsp: dai: Add support for ALH streams 2 and 3

Adds two additional alh2 and alh3 "devices" to already defined
alh0 and alh1. This (seems) is a temporarily solution as
the hardware actually supports 16 streams and future update
to device tree is required.

Signed-off-by: Serhiy Katsyuba <serhiy.katsyuba@intel.com>