percpu: Remove __this_cpu_ptr

#define __raw_get_cpu_var(var)	(*raw_cpu_ptr(&(var)))

#define __get_cpu_var(var)	(*this_cpu_ptr(&(var)))

/* keep until we have removed all uses of __this_cpu_ptr */

#define __this_cpu_ptr(ptr)	raw_cpu_ptr(ptr)

/*

 * Must be an lvalue. Since @var must be a simple identifier,

 * we force a syntax error here if it isn't.