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>

net/eth_legacy.c

@@ -11,7 +11,7 @@
 #include <environment.h>
 #include <net.h>
 #include <phy.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
 #include "eth_internal.h"
 
 DECLARE_GLOBAL_DATA_PTR;