[ARM] Unuse another Linux PTE bit

L_PTE_ASID is not really required to be stored in every PTE, since we
can identify it via the address passed to set_pte_at().  So, create
set_pte_ext() which takes the address of the PTE to set, the Linux
PTE value, and the additional CPU PTE bits which aren't encoded in
the Linux PTE value.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S
index 080efac..5b80b6b 100644
--- a/arch/arm/mm/proc-arm926.S
+++ b/arch/arm/mm/proc-arm926.S
@@ -348,12 +348,12 @@
 	mov	pc, lr
 
 /*
- * cpu_arm926_set_pte(ptep, pte)
+ * cpu_arm926_set_pte_ext(ptep, pte, ext)
  *
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm926_set_pte)
+ENTRY(cpu_arm926_set_pte_ext)
 #ifdef CONFIG_MMU
 	str	r1, [r0], #-2048		@ linux version
 
@@ -439,7 +439,7 @@
 	.word	cpu_arm926_do_idle
 	.word	cpu_arm926_dcache_clean_area
 	.word	cpu_arm926_switch_mm
-	.word	cpu_arm926_set_pte
+	.word	cpu_arm926_set_pte_ext
 	.size	arm926_processor_functions, . - arm926_processor_functions
 
 	.section ".rodata"