parisc/unaligned: Fix hex output to show 8 hex chars

Change back printk format to 0x%08lx instead of %#08lx, since the latter
does not seem to reliably format the value to 8 hex chars.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.18+
Fixes: e5e9e7f2 ("parisc/unaligned: Enhance user-space visible output")