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/include/clk.h b/include/clk.h
index 7273127..fe1f892 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -9,8 +9,8 @@
 #ifndef _CLK_H_
 #define _CLK_H_
 
+#include <linux/errno.h>
 #include <linux/types.h>
-#include <asm/errno.h>
 
 /**
  * A clock is a hardware signal that oscillates autonomously at a specific