m68k: merge the mmu and non-mmu versions of ucontext.h

The non-mmu m68k setups can use the mm ucontext.h with no change.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/include/asm/ucontext.h

-#ifdef __uClinux__
-#include "ucontext_no.h"
-#else
-#include "ucontext_mm.h"
+#ifndef _M68K_UCONTEXT_H
+#define _M68K_UCONTEXT_H
+
+typedef int greg_t;
+#define NGREG 18
+typedef greg_t gregset_t[NGREG];
+
+typedef struct fpregset {
+	int f_fpcntl[3];
+	int f_fpregs[8*3];
+} fpregset_t;
+
+struct mcontext {
+	int version;
+	gregset_t gregs;
+	fpregset_t fpregs;
+};
+
+#define MCONTEXT_VERSION 2
+
+struct ucontext {
+	unsigned long	  uc_flags;
+	struct ucontext  *uc_link;
+	stack_t		  uc_stack;
+	struct mcontext	  uc_mcontext;
+	unsigned long	  uc_filler[80];
+	sigset_t	  uc_sigmask;	/* mask last for extensibility */
+};
+
 #endif

arch/m68k/include/asm/ucontext_mm.h

-#ifndef _M68K_UCONTEXT_H
-#define _M68K_UCONTEXT_H
-
-typedef int greg_t;
-#define NGREG 18
-typedef greg_t gregset_t[NGREG];
-
-typedef struct fpregset {
-	int f_fpcntl[3];
-	int f_fpregs[8*3];
-} fpregset_t;
-
-struct mcontext {
-	int version;
-	gregset_t gregs;
-	fpregset_t fpregs;
-};
-
-#define MCONTEXT_VERSION 2
-
-struct ucontext {
-	unsigned long	  uc_flags;
-	struct ucontext  *uc_link;
-	stack_t		  uc_stack;
-	struct mcontext	  uc_mcontext;
-	unsigned long	  uc_filler[80];
-	sigset_t	  uc_sigmask;	/* mask last for extensibility */
-};
-
-#endif

arch/m68k/include/asm/ucontext_no.h

-#ifndef _M68KNOMMU_UCONTEXT_H
-#define _M68KNOMMU_UCONTEXT_H
-
-typedef int greg_t;
-#define NGREG 18
-typedef greg_t gregset_t[NGREG];
-
-typedef struct fpregset {
-	int f_pcr;
-	int f_psr;
-	int f_fpiaddr;
-	int f_fpregs[8][3];
-} fpregset_t;
-
-struct mcontext {
-	int version;
-	gregset_t gregs;
-	fpregset_t fpregs;
-};
-
-#define MCONTEXT_VERSION 2
-
-struct ucontext {
-	unsigned long	  uc_flags;
-	struct ucontext  *uc_link;
-	stack_t		  uc_stack;
-	struct mcontext	  uc_mcontext;
-	unsigned long	  uc_filler[80];
-	sigset_t	  uc_sigmask;	/* mask last for extensibility */
-};
-
-#endif