sh: Allow optimized clear/copy page routines to be used on SH-2.

Presently these are restricted to SH-3 and SH-4, so we reorder the
ifdefs a bit to let other parts use these also.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/lib/clear_page.S

@@ -27,11 +27,11 @@ ENTRY(clear_page)
 	mov	#0,r0
 	!
 1:
-#if defined(CONFIG_CPU_SH3)
-	mov.l	r0,@r4
-#elif defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_CPU_SH4)
 	movca.l	r0,@r4
 	mov	r4,r1
+#else
+	mov.l	r0,@r4
 #endif
 	add	#32,r4
 	mov.l	r0,@-r4

arch/sh/lib/copy_page.S

@@ -41,11 +41,11 @@ ENTRY(copy_page)
 	mov.l	@r11+,r5
 	mov.l	@r11+,r6
 	mov.l	@r11+,r7
-#if defined(CONFIG_CPU_SH3)
-	mov.l	r0,@r10
-#elif defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_CPU_SH4)
 	movca.l	r0,@r10
 	mov	r10,r0
+#else
+	mov.l	r0,@r10
 #endif
 	add	#32,r10
 	mov.l	r7,@-r10