rename: @btf.o -> @mainline.o

(in prep for these actually being only loaded via mainline netbpfload)

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I9cea40b3d7525aa3ef8fdaad291b27d7d179a1aa
diff --git a/bpf_progs/Android.bp b/bpf_progs/Android.bp
index 674cd98..1958aa8 100644
--- a/bpf_progs/Android.bp
+++ b/bpf_progs/Android.bp
@@ -94,13 +94,13 @@
 }
 
 bpf {
-    name: "offload@btf.o",
-    srcs: ["offload@btf.c"],
+    name: "offload@mainline.o",
+    srcs: ["offload@mainline.c"],
     btf: true,
     cflags: [
         "-Wall",
         "-Werror",
-        "-DBTF",
+        "-DMAINLINE",
     ],
 }
 
@@ -114,13 +114,13 @@
 }
 
 bpf {
-    name: "test@btf.o",
-    srcs: ["test@btf.c"],
+    name: "test@mainline.o",
+    srcs: ["test@mainline.c"],
     btf: true,
     cflags: [
         "-Wall",
         "-Werror",
-        "-DBTF",
+        "-DMAINLINE",
     ],
 }