modules: hal_infineon: Fix whd includes

Updates hal_infineon to remove stray includes of cyhal  that broke the
build for folks using our wireless parts with non-Infineon
microcontrollers when building with Zephyr.

Wrap #include's of cyhal such that they are not included when building.

Signed-off-by: Tom Burdick <thomas.burdick@infineon.com>