platform/x86: intel_punit_ipc: Revert "Fix resource ioremap warning"

Since we have a proper fix for intel_pmc_ipc driver for resource management,
get rid of unneeded commit in the intel_punit_ipc driver.

This reverts commit 6cc8cbbc.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>