ARC: Disintegrate arcregs.h

* Move the various sub-system defines/types into relevant files/functions
  (reduces compilation time)

* move CPU specific stuff out of asm/tlb.h into asm/mmu.h

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/include/asm/tlb-mmu1.h

@@ -10,7 +10,6 @@
 #define __ASM_TLB_MMU_V1_H__
 
 #include <asm/mmu.h>
-#include <asm/tlb.h>
 
 #if defined(__ASSEMBLY__) && (CONFIG_ARC_MMU_VER == 1)