sh: sh4: Remove CONFIG_SH4A definition from source code

SH4 and SH4A are compatible. But some instructions are different from these.
In Linux kernel, It is treated as a separate CPU, but for now, I think that
there is no need to divide especially in the U-Boot.

This removes CONFIG_SH4A definition from source code, SH4A is treated as SH4.
And this fix white space.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/include/sh_tmu.h b/include/sh_tmu.h
index f5b42fa..61afc71 100644
--- a/include/sh_tmu.h
+++ b/include/sh_tmu.h
@@ -47,7 +47,7 @@
 };
 #endif /* CONFIG_SH3 */
 
-#if defined(CONFIG_SH4) || defined(CONFIG_SH4A) || defined(CONFIG_RMOBILE)
+#if defined(CONFIG_SH4) || defined(CONFIG_RMOBILE)
 struct tmu_regs {
 	u32 reserved;
 	u8  tstr;