Use target.linux for all linux kernel based targets

Now in Android.bp files, target.linux applies to all targets running a
linux kernel (android, linux_glibc, linux_bionic). So common
flags/sources/etc can be combined instead of copying them to each
target.

Test: m
Change-Id: If280d450e9765f6876ac22caa8b26e8589ab0137
diff --git a/libese-sysdeps/Android.bp b/libese-sysdeps/Android.bp
index 7ce274c..95dba4e 100644
--- a/libese-sysdeps/Android.bp
+++ b/libese-sysdeps/Android.bp
@@ -31,17 +31,13 @@
         cflags: ["-DLOG_NDEBUG=0"],
     },
     target: {
-        android: {
+        linux: {
             srcs: ["android-sysdeps.c"],
         },
 
         darwin: {
             srcs: ["darwin-sysdeps.c"],
         },
-
-        linux_glibc: {
-            srcs: ["android-sysdeps.c"],
-        },
     },
 
     shared_libs: [],