treewide: replace #include <asm/errno.h> with <linux/errno.h>

Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content.  (both just wrap <asm-generic/errno.h>)

Replace all include directives for <asm/errno.h> with <linux/errno.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/renesas/alt/alt.c b/board/renesas/alt/alt.c
index a1a26a6..b35b6a3 100644
--- a/board/renesas/alt/alt.c
+++ b/board/renesas/alt/alt.c
@@ -13,7 +13,7 @@
 #include <asm/processor.h>
 #include <asm/mach-types.h>
 #include <asm/io.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/gpio.h>
 #include <asm/arch/rmobile.h>