Add rlim64_t to libc/include/sys/resource

crosvm is using rlim64_t. Adding for portability.

Bug: 255594691
Test: m libc && m bionic
Change-Id: I752bfdaa23d900278fe7224306d785b0c9f67d3f
diff --git a/libc/include/sys/resource.h b/libc/include/sys/resource.h
index 9181125..ccb267d 100644
--- a/libc/include/sys/resource.h
+++ b/libc/include/sys/resource.h
@@ -41,6 +41,7 @@
 #define RLIM_SAVED_MAX RLIM_INFINITY
 
 typedef unsigned long rlim_t;
+typedef unsigned long long rlim64_t;
 
 int getrlimit(int __resource, struct rlimit* __limit);
 int setrlimit(int __resource, const struct rlimit* __limit);