arm: arch/arm/include/asm/page.h needs personality.h

VM_DATA_DEFAULT_FLAGS uses READ_IMPLIES_EXEC, so page.h should include
personality.h to provide this.

This fixes no known bugs and can be safely ignored ;)

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>