riscv: Remove asm/byteorder.h

With the common code moved fully onto xen/byteorder.h, clean up the dregs.

The use of byteorder.h in io.h appears to have been copy&paste from ARM.  It's
not needed, but macros and types are.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>

xen/arch/riscv/include/asm/byteorder.h

@@ -1,14 +0,0 @@
-#ifndef ASM__RISCV__BYTEORDER_H
-#define ASM__RISCV__BYTEORDER_H
-
-#include <xen/byteorder.h>
-
-#endif /* ASM__RISCV__BYTEORDER_H */
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- */

xen/arch/riscv/include/asm/io.h

@@ -38,7 +38,8 @@
 #ifndef ASM__RISCV__IO_H
 #define ASM__RISCV__IO_H
 
-#include <asm/byteorder.h>
+#include <xen/macros.h>
+#include <xen/types.h>
 
 /*
  * The RISC-V ISA doesn't yet specify how to query or modify PMAs, so we can't