linux-user/strace: Improve capget()/capset() output

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-By: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180628034652.24152-3-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/strace.list

@@ -59,10 +59,10 @@
 { TARGET_NR_cacheflush, "cacheflush" , NULL, NULL, NULL },
 #endif
 #ifdef TARGET_NR_capget
-{ TARGET_NR_capget, "capget" , NULL, NULL, NULL },
+{ TARGET_NR_capget, "capget" , "%s(%p,%p)", NULL, NULL },
 #endif
 #ifdef TARGET_NR_capset
-{ TARGET_NR_capset, "capset" , NULL, NULL, NULL },
+{ TARGET_NR_capset, "capset" , "%s(%p,%p)", NULL, NULL },
 #endif
 #ifdef TARGET_NR_chdir
 { TARGET_NR_chdir, "chdir" , NULL, print_chdir, NULL },