signal/frv: Move the frv specific si_codes to asm-generic/siginfo.h

Having si_codes in many different files simply encourages duplicate definitions
that can cause problems later.  To avoid that merce the frv specific si_codes
into uapi/asm-generic/siginfo.h

This allows the removal of arch/frv/uapi/include/asm/siginfo.h as the last
last meaningful definition it held was FPE_MDAOVF.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

arch/frv/include/uapi/asm/Kbuild

 # UAPI Header export list
 include include/uapi/asm-generic/Kbuild.asm
 
+generic-y += siginfo.h
 generic-y += bpf_perf_event.h

arch/frv/include/uapi/asm/siginfo.h

-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SIGINFO_H
-#define _ASM_SIGINFO_H
-
-#include <linux/types.h>
-#include <asm-generic/siginfo.h>
-
-#define FPE_MDAOVF	9	/* media overflow */
-#undef NSIGFPE
-#define NSIGFPE		9
-
-#endif
-

include/uapi/asm-generic/siginfo.h

@@ -204,6 +204,9 @@ typedef struct siginfo {
 #define FPE_FLTRES	6	/* floating point inexact result */
 #define FPE_FLTINV	7	/* floating point invalid operation */
 #define FPE_FLTSUB	8	/* subscript out of range */
+#ifdef __frv__
+# define FPE_MDAOVF	9	/* media overflow */
+#endif
 #ifdef __ia64__
 # define __FPE_DECOVF	9	/* decimal overflow */
 # define __FPE_DECDIV	10	/* decimal division by zero */