ioperm is not used internally, remove hidden_proto

Without a hidden_def we'd end up with __GI_ioperm which is wrong.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/sysdeps/linux/common/ioperm.c

@@ -13,8 +13,10 @@
 
 /* psm: can't #include <sys/io.h>, some archs miss it */
 extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on) __THROW;
+/* Not needed internally;
 libc_hidden_proto(ioperm)
-
+*/
 _syscall3(int, ioperm, unsigned long, from, unsigned long, num, int, turn_on)
+/*libc_hidden_def(ioperm)*/
 
 #endif