Rename libbpf to libbpf_bcc

This is to prevent a name collision with "upstream"
libbpf (external/libbpf) which is built using the same name.

Bug: 203823368
Test: m FrameworksNetTests
Signed-off-by: Connor O'Brien <connoro@google.com>
Change-Id: I9a009493fe0482967ab1f92516514715cfd457d6

tests/unit/Android.bp

@@ -25,7 +25,7 @@ java_defaults {
         "ld-android",
         "libbase",
         "libbinder",
-        "libbpf",
+        "libbpf_bcc",
         "libbpf_android",
         "libc++",
         "libcgrouprc",