openrisc: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers

__ASSEMBLY__ is only defined by the Makefile of the kernel, so
this is not really useful for uapi headers (unless the userspace
Makefile defines it, too). Let's switch to __ASSEMBLER__ which
gets set automatically by the compiler when compiling assembly
code.

This is a completely mechanical patch (done with a simple "sed -i"
statement).

Cc: Jonas Bonn <[e-mail]>
Cc: Stefan Kristiansson <[e-mail]>
Cc: Stafford Horne <[e-mail]>
Cc: [e-mail]
Signed-off-by: Thomas Huth <[e-mail]>
Signed-off-by: Stafford Horne <[e-mail]>

arch/openrisc/include/uapi/asm/ptrace.h

···
 #ifndef _UAPI__ASM_OPENRISC_PTRACE_H
 #define _UAPI__ASM_OPENRISC_PTRACE_H
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 /*
  * This is the layout of the regset returned by the GETREGSET ptrace call
  */