x86: unify include/asm/cache_32/64.h

Same file, except for whitespace, comment formatting and:

32-bit:	unsigned long *virt_addr = va;
64-bit: unsigned int *virt_addr = va;

Both can be safely replaced by:
	u32 i, *virt_addr = va;

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>