Add PR_SET|GET_PDEATHSIG constants

libc didn't export the constants for the Android OS although bionic
supports it. The upstream crosvm started to use these, thus manually
export them until this is fixed in the upstream.

Bug: 204072128
Test: m crosvm
Change-Id: I56d1f2da6d8ddcccba6b595b0a957c9b70dc850f
diff --git a/patches/missing.diff b/patches/missing-001.diff
similarity index 100%
rename from patches/missing.diff
rename to patches/missing-001.diff
diff --git a/patches/missing-002.diff b/patches/missing-002.diff
new file mode 100644
index 0000000..63696dc
--- /dev/null
+++ b/patches/missing-002.diff
@@ -0,0 +1,13 @@
+diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
+index 3ce6c952..762ea762 100644
+--- a/src/unix/linux_like/android/mod.rs
++++ b/src/unix/linux_like/android/mod.rs
+@@ -2437,6 +2437,8 @@ pub const PF_NFC: ::c_int = AF_NFC;
+ pub const PF_VSOCK: ::c_int = AF_VSOCK;
+ 
+ // sys/prctl.h
++pub const PR_SET_PDEATHSIG: ::c_int = 1;
++pub const PR_GET_PDEATHSIG: ::c_int = 2;
+ pub const PR_GET_SECUREBITS: ::c_int = 27;
+ pub const PR_SET_SECUREBITS: ::c_int = 28;
+ 
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
index 3ce6c95..762ea76 100644
--- a/src/unix/linux_like/android/mod.rs
+++ b/src/unix/linux_like/android/mod.rs
@@ -2437,6 +2437,8 @@
 pub const PF_VSOCK: ::c_int = AF_VSOCK;
 
 // sys/prctl.h
+pub const PR_SET_PDEATHSIG: ::c_int = 1;
+pub const PR_GET_PDEATHSIG: ::c_int = 2;
 pub const PR_GET_SECUREBITS: ::c_int = 27;
 pub const PR_SET_SECUREBITS: ::c_int = 28;