Fix crosstool target cpu to match local.

The entries in BUILD.tpl specify cpu "local", so CROSSTOOL.tpl needs to match.

Closes #4957.

Change-Id: I68d7148fa6cb73cd83ef99eab76e0fd2f6227580
PiperOrigin-RevId: 191444915

tools/cpp/CROSSTOOL.tpl

diff --git a/tools/cpp/CROSSTOOL.tpl b/tools/cpp/CROSSTOOL.tpl
index 518bc44..8ed7608 100644
--- a/tools/cpp/CROSSTOOL.tpl
+++ b/tools/cpp/CROSSTOOL.tpl
@@ -22,6 +22,11 @@
 }
 
 default_toolchain {
+  cpu: "local"
+  toolchain_identifier: "stub_armeabi-v7a"
+}
+
+default_toolchain {
   cpu: "armeabi-v7a"
   toolchain_identifier: "stub_armeabi-v7a"
 }
@@ -47,6 +52,11 @@
 }
 
 default_toolchain {
+  cpu: "local"
+  toolchain_identifier: "ios_x86_64"
+}
+
+default_toolchain {
   cpu: "ios_x86_64"
   toolchain_identifier: "ios_x86_64"
 }