arch/xtensa: Enable backtrace on panic on Intel ADSP platforms

Platform specific functions necessary to enable this feature were
implemented (z_xtensa_ptr_executable() and
z_xtensa_stack_ptr_is_sane() for Intel ADSP platforms.

Current implementation just ensures stack pointer and program counter
are within relevant areas defined in the linker scripts, without going
too fine grained.

Also, `.iram1` section, used by the backtrace code, also added to
Intel ADSP linker script.

Finally, update west manifest to use up-to-date SOF, which contains a
patch to fix build issues related to the linker changes.

Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>