The unsigned long datatype is not sufficient for mapping physical addresses
>= 4GB.

This patch ensures that the phys_addr_t datatype is used to represent
physical addresses when passed to the outer cache functions. Note that the
definitions in struct outer_cache_fns remain as unsigned long because there
are currently no outer cache implementations supporting physical addresses
wider than 32-bits.
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>