intel_adsp: adsp_memory: update cAVS 2.5 memory definitions

This commit updates the device tree and memory header file
for the Intel cAVS 2.5 platform to define the LSBPM and
HSBPM registers.

Changes include:
- Added node definitions for 'lsbpm' and 'hsbpm' in
intel_adsp_cavs25.dtsi and intel_adsp_cavs25_tgph.dtsi
- Updated adsp_memory.h

Signed-off-by: Damian Nikodem <damian.nikodem@intel.com>