x86/mm/kconfig: Simplify conditions for HAVE_ARCH_HUGE_VMAP

Simplify the conditions selecting HAVE_ARCH_HUGE_VMAP since
X86_PAE depends on X86_32 already.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Elliott@hp.com
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave.hansen@intel.com
Cc: linux-mm <linux-mm@kvack.org>
Cc: pebolle@tiscali.nl
Link: http://lkml.kernel.org/r/1431714237-880-2-git-send-email-toshi.kani@hp.com
Link: http://lkml.kernel.org/r/1432628901-18044-2-git-send-email-bp@alien8.de


Signed-off-by: Ingo Molnar <mingo@kernel.org>