arm,arm64,drivers: reduce scope of cap_parsing_failed

arm,arm64,drivers: reduce scope of cap_parsing_failed

Reduce the scope of cap_parsing_failed (making it static in
drivers/base/arch_topology.c) by slightly changing {arm,arm64} DT
parsing code.

For arm checking for !cap_parsing_failed before calling normalize_
cpu_capacity() is superfluous, as returning an error from parse_
cpu_capacity() (above) means cap_from _dt is set to false.

For arm64 we can simply check if raw_capacity points to something,
which is not if capacity parsing has failed.

Suggested-by: Morten Rasmussen <[email protected]>
Signed-off-by: Juri Lelli <[email protected]>
Acked-by: Russell King <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>