include dlfcn.h in ldso.h to get RTLD_NODELETE definition

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

ldso/include/ldso.h

@@ -38,6 +38,7 @@
 #ifndef __ARCH_HAS_NO_SHARED__
 #include <dl-syscall.h>
 #include <dl-string.h>
+#include <dlfcn.h>
 /* Now the ldso specific headers */
 #include <dl-elf.h>
 #ifdef __UCLIBC_HAS_TLS__