parisc/signal: Add FPE_CONDTRAP for conditional trap handling

Posix and common sense requires that SI_USER not be a signal specific
si_code. Thus add a new FPE_CONDTRAP si_code for conditional traps.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>

include/uapi/asm-generic/siginfo.h

@@ -211,7 +211,8 @@ typedef struct siginfo {
 #define __FPE_INVASC	12	/* invalid ASCII digit */
 #define __FPE_INVDEC	13	/* invalid decimal digit */
 #define FPE_FLTUNK	14	/* undiagnosed floating-point exception */
-#define NSIGFPE		14
+#define FPE_CONDTRAP	15	/* trap on condition */
+#define NSIGFPE		15
 
 /*
  * SIGSEGV si_codes