x86, flags: Rename X86_EFLAGS_BIT1 to X86_EFLAGS_FIXED

commit 1adfa76a95fe4444124a502f7cc858a39d5b8e01 upstream.

Bit 1 in the x86 EFLAGS is always set.  Name the macro something that
actually tries to explain what it is all about, rather than being a
tautology.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lkml.kernel.org/n/tip-f10rx5vjjm6tfnt8o1wseb3v@git.kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>