include: intertupt_controller: esp32: Correct include-guard

Both `include/zephyr/drivers/interrupt_controller/intc_esp32.h` and
`include/zephyr/drivers/interrupt_controller/intc_esp32c3.h`
define `ZEPHYR_INCLUDE_DRIVERS_ESP_INTR_ALLOC_H__` to prevent
duplicate inclusion, so it cannot be properly prevented.

Change to a file path name-based definition.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>