s390/mm: cleanup phys_to_pfn() and friends

Make page, frame, virtual and physical address conversion macros
more expressive by avoiding redundant definitions and defining
new macros using existing ones.

Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
1 file changed