image_signing: Add one more cheets flavor.

On Pi, the target name is sdk_cheets instead of sdk_google_cheets

BUG=chromium:1057649
TEST=./sign_android_unittests.sh
BRANCH=none
Change-Id: Ic4e5123687eee7fc9f6c0640b7b9455f180dff6e
Signed-off-by: Lepton Wu <lepton@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2083836
Reviewed-by: Nicolas Norvez <norvez@chromium.org>
Reviewed-by: George Engelbrecht <engeg@google.com>
diff --git a/scripts/image_signing/lib/sign_android_lib.sh b/scripts/image_signing/lib/sign_android_lib.sh
index eae2a36..7de328a 100644
--- a/scripts/image_signing/lib/sign_android_lib.sh
+++ b/scripts/image_signing/lib/sign_android_lib.sh
@@ -115,7 +115,8 @@
   # - cheets builds:
   #   ro.build.flavor=cheets_${arch}-user(debug)
   # - SDK builds:
-  #   ro.build.flavor=sdk_google_cheets_${arch}-user(debug)
+  #   ro.build.flavor=sdk_google_cheets_${arch}-user(debug) # For N
+  #   ro.build.flavor=sdk_cheets_${arch}-user(debug) # For P
   # - AOSP builds:
   #   ro.build.flavor=aosp_cheets_${arch}-user(debug)
   # "cheets" and "SDK" builds both use the same signing keys, cheetskeys. "AOSP"
@@ -123,6 +124,7 @@
   if [[ "${flavor_prop}" == aosp_cheets_* ]]; then
     keyset="aosp"
   elif [[ "${flavor_prop}" == cheets_* ||
+    "${flavor_prop}" == sdk_cheets_* ||
     "${flavor_prop}" == sdk_google_cheets_* ]]; then
     keyset="cheets"
   else
diff --git a/scripts/image_signing/sign_android_unittests.sh b/scripts/image_signing/sign_android_unittests.sh
index 00a651f..9b0c034 100755
--- a/scripts/image_signing/sign_android_unittests.sh
+++ b/scripts/image_signing/sign_android_unittests.sh
@@ -165,6 +165,8 @@
   choose_signing_keyset_test_helper "aosp_cheets_x86-userdebug" "aosp"
   echo "TEST: Keyset for sdk_google_cheets build."
   choose_signing_keyset_test_helper "sdk_google_cheets_x86-userdebug" "cheets"
+  echo "TEST: Keyset for sdk_cheets build."
+  choose_signing_keyset_test_helper "sdk_cheets_x86-userdebug" "cheets"
   echo "TEST: Keyset for cheets_x86 build."
   choose_signing_keyset_test_helper "cheets_x86-user" "cheets"
   echo "TEST: Keyset for cheets_arm build."