Update libcurl from 7.54.1 to 7.55.1.

Bug: http://b/64610131
Test: builds, boots, `vendor/google/tools/fake-ota on streaming` works
Change-Id: I7ecaf9c83e9496ac4a379507791bec637deaa4cb
diff --git a/Android.bp b/Android.bp
index 6d5476d..61ccab4 100644
--- a/Android.bp
+++ b/Android.bp
@@ -27,6 +27,26 @@
         "-Wno-varargs",
     ],
     local_include_dirs: ["include", "lib"],
+    multilib: {
+        lib32: {
+            cflags: [
+                "-DSIZEOF_LONG=4",
+                "-DSIZEOF_LONG_LONG=8",
+                "-DSIZEOF_SIZE_T=4",
+                "-DSIZEOF_TIME_T=4",
+                "-DSIZEOF_VOIDP=4",
+            ],
+        },
+        lib64: {
+            cflags: [
+                "-DSIZEOF_LONG=8",
+                "-DSIZEOF_LONG_LONG=8",
+                "-DSIZEOF_SIZE_T=8",
+                "-DSIZEOF_TIME_T=8",
+                "-DSIZEOF_VOIDP=8",
+            ],
+        },
+    },
 }
 
 cc_library {
@@ -245,7 +265,6 @@
         "src/tool_urlglob.c",
         "src/tool_util.c",
         "src/tool_vms.c",
-        "src/tool_writeenv.c",
         "src/tool_writeout.c",
         "src/tool_xattr.c",
     ],