MIPS: lib: strlen_user: Use macro to build the strlen_user symbol

Build the __strlen_user symbol using a macro. In EVA mode we will
need to use similar code to do the userspace load operations so
it is better if we use a macro to avoid code duplications.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

arch/mips/lib/strlen_user.S

@@ -22,19 +22,23 @@
  *
  * Return 0 for error
  */
-LEAF(__strlen_user_asm)
+	.macro __BUILD_STRLEN_ASM func
+LEAF(__strlen_\func\()_asm)
 	LONG_L		v0, TI_ADDR_LIMIT($28)	# pointer ok?
 	and		v0, a0
-	bnez		v0, .Lfault
+	bnez		v0, .Lfault\@
 
-FEXPORT(__strlen_user_nocheck_asm)
+FEXPORT(__strlen_\func\()_nocheck_asm)
 	move		v0, a0
-1:	EX(lbu, v1, (v0), .Lfault)
+1:	EX(lbu, v1, (v0), .Lfault\@)
 	PTR_ADDIU	v0, 1
 	bnez		v1, 1b
 	PTR_SUBU	v0, a0
 	jr		ra
-	END(__strlen_user_asm)
+	END(__strlen_\func\()_asm)
 
-.Lfault:	move		v0, zero
+.Lfault\@:	move		v0, zero
 	jr		ra
+	.endm
+
+__BUILD_STRLEN_ASM user