android: restore signalfd fields to c_ulonglong

Android's NDK typedefs __u64 as unsigned long long.

Author: Stephen Barber

src/unix/notbsd/android/mod.rs

@@ -172,10 +172,10 @@ s! {
         pub ssi_trapno: ::uint32_t,
         pub ssi_status: ::int32_t,
         pub ssi_int: ::int32_t,
-        pub ssi_ptr: ::uint64_t,
-        pub ssi_utime: ::uint64_t,
-        pub ssi_stime: ::uint64_t,
-        pub ssi_addr: ::uint64_t,
+        pub ssi_ptr: ::c_ulonglong,
+        pub ssi_utime: ::c_ulonglong,
+        pub ssi_stime: ::c_ulonglong,
+        pub ssi_addr: ::c_ulonglong,
         pub ssi_addr_lsb: ::uint16_t,
         _pad2: ::uint16_t,
         pub ssi_syscall: ::int32_t,