parisc: Align os_hpmc_size on word boundary

commit 0ed9d3de upstream.

The os_hpmc_size variable sometimes wasn't aligned at word boundary and thus
triggered the unaligned fault handler at startup.
Fix it by aligning it properly.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>