intel: Restore formatting of offsets in debug statements

Using lower_32_bits and upper_32_bits macros was accidentally dropped in:

    commit 8b4d57e7
    Author: Michał Winiarski <michal.winiarski@intel.com>
    Date:   Wed Sep 9 16:07:10 2015 +0200

	intel: Add support for softpin

Let's restore previous, more readable format.

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>