x86/msr: Rename DECLARE_ARGS() to EAX_EDX_DECLARE_ARGS

DECLARE_ARGS() is way too generic of a name that says very little about
why these args are declared in that fashion - use the EAX_EDX_ prefix
to create a common prefix between the three helper methods:

	EAX_EDX_DECLARE_ARGS()
	EAX_EDX_VAL()
	EAX_EDX_RET()

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Uros Bizjak <ubizjak@gmail.com>
Cc: linux-kernel@vger.kernel.org