valgrind: add one more dlopen suppression

This gets Valgrind on my Arch box to be 100% "leak-free" ;-)

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

Author: evelikov

libkmod/valgrind/kmod.supp

@@ -1,7 +1,13 @@
 {
-   ignore-leaked-dlopen-handles
+   ignore-leaked-dlopen-handles 1
    Memcheck:Leak
    ...
    fun:dlopen@@GLIBC_2.34
 }
+{
+   ignore-leaked-dlopen-handles 2
+   Memcheck:Leak
+   ...
+   fun:_dl_open
+}