intel_adsp: ace: fix linker script for xcc-clang compiler

rodata section for xtensa overrides the .ctors section
containing the constructor info and the _ZEPHYR_CTOR_LIST_.
Removes the ctor related linker script lines from the rodata
section of the ace linker script to ensure that the .ctors is
properly generated and placed when using the xcc-clang compiler.

Fixes #54730

Signed-off-by: Aastha Grover <aastha.grover@intel.com>