tools/power turbostat: tweak whitespace in output format

turbostat -S
output was off by 1 space before this patch.

Signed-off-by: Len Brown <len.brown@intel.com>
tools/power turbostat: Don't insist on running as root

For turbostat to run as non-root, it needs to permissions:

1. read access to /dev/cpu/*/msr
	via standard user/group/world file permissions

2. CAP_SYS_RAWIO
	eg.  # setcap cap_sys_rawio=ep turbostat

Yes, running as root still works.

Signed-off-by: Len Brown <len.brown@intel.com>
tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS

The Processor generation code-named Haswell
added MSR_{CORE | GFX | RING}_PERF_LIMIT_REASONS
to explain when and how the processor limits frequency.

turbostat -v
will now decode these bits.

Each MSR has an "Active" set of bits which describe
current conditions, and a "Logged" set of bits,
which describe what has happened since last cleared.

Turbostat currently doesn't clear the log bits.

Signed-off-by: Len Brown <len.brown@intel.com>
cpufreq: Add SFI based cpufreq driver support

This adds the SFI based cpu freq driver for some of the Intel's
Silvermont based Atom architectures like Z34xx and Z35xx.

Signed-off-by: Rudramuni, Vishwesh M <vishwesh.m.rudramuni@intel.com>
Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Merge branch 'cpuidle' into release
Merge branch 'turbostat' into release

Conflicts:
	arch/x86/include/uapi/asm/msr-index.h
	fixed by accepting both (adjacent additions)

Signed-off-by: Len Brown <len.brown@intel.com>