drivers: intc: esp32: Shared allocator for Xtensa and RISCV Update interrupt allocator to use the same driver for both Xtensa and RISCV devices. Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com> Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>