x86/msr: Lift AMD family 0x15 power-specific MSRs

... into the global msr-index.h header because they're used in multiple
compilation units. Sort the MSR list a bit. Update the msr-index.h copy
in tools.

No functional changes.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lkml.kernel.org/r/20200608164847.14232-1-bp@alien8.de