Revert "MIPS: Allow ASID size to be determined at boot time."

This reverts commit d532f3d26716a39dfd4b88d687bd344fbe77e390.

The original commit has several problems:

1) Doesn't work with 64-bit kernels.

2) Calls TLBMISS_HANDLER_SETUP() before the code is generated.

3) Calls TLBMISS_HANDLER_SETUP() twice in per_cpu_trap_init() when
   only one call is needed.

[ralf@linux-mips.org: Also revert the bits of the ASID patch which were
hidden in the KVM merge.]

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: "Steven J. Hill" <Steven.Hill@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5242/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 8a12d00..32b9f21 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -11,7 +11,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/tlbdebug.h>
-#include <asm/mmu_context.h>
 
 static inline const char *msk2str(unsigned int mask)
 {
@@ -56,7 +55,7 @@
 	s_pagemask = read_c0_pagemask();
 	s_entryhi = read_c0_entryhi();
 	s_index = read_c0_index();
-	asid = ASID_MASK(s_entryhi);
+	asid = s_entryhi & 0xff;
 
 	for (i = first; i <= last; i++) {
 		write_c0_index(i);
@@ -86,7 +85,7 @@
 
 			printk("va=%0*lx asid=%02lx\n",
 			       width, (entryhi & ~0x1fffUL),
-			       ASID_MASK(entryhi));
+			       entryhi & 0xff);
 			printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ",
 			       width,
 			       (entrylo0 << 6) & PAGE_MASK, c0,