FOr SYSCALL_MODULE_HELPER, use "sys/<syscallname>" module name.

FOr SYSCALL32_MODULE_HELPER, use "sys32/<syscallname>" module name.
This avoids modules name conflict when compat32 syscall does not
need shims.

Note that SYSCALL_MODULE_HELPER is going to be unused in the tree by
several next commits.

Suggested by:	jhb
MFC after:	2 weeks

sys/compat/freebsd32/freebsd32_util.h

@@ -61,7 +61,7 @@ static struct syscall_module_data name##_syscall32_mod = {     \
 };                                                             \
                                                                \
 static moduledata_t name##32_mod = {                           \
-       #name,                                                  \
+       "sys32/" #name,                                         \
        syscall32_module_handler,                               \
        &name##_syscall32_mod                                   \
 };                                                             \

sys/sys/sysent.h

@@ -149,7 +149,7 @@ static struct syscall_module_data name##_syscall_mod = {	\
 };								\
 								\
 static moduledata_t name##_mod = {				\
-	#name,							\
+	"sys/" #name,						\
 	syscall_module_handler,					\
 	&name##_syscall_mod					\
 };								\