*readq() family operates with u64 arguments, so they need 64-bit
byteswaps.
Correct macros for Generic MIPS and IP-32 to match other machines'
implementations.
Signed-off-by: NAlexander Lobakin <alobakin@pm.me>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>