Fix some issues found by new doclava linter.

Add missing API annotations for permissions and SdkConstants, and
invoke doclava with new "-android" flag.

Test: make -j32 offline-sdk-docs
Bug: 37526420
Change-Id: I970bb2655eb568fd25004636f134c794663a6c33

diff --git a/Android.mk b/Android.mk
index 991d185..2431e28 100644
--- a/Android.mk
+++ b/Android.mk

@@ -923,6 +923,7 @@
 # Conscrypt (com.android.org.conscrypt) is an implementation detail and should
 # not be referenced in the documentation.
 framework_docs_LOCAL_DROIDDOC_OPTIONS := \
+    -android \
     -knowntags ./frameworks/base/docs/knowntags.txt \
     -knowntags ./libcore/known_oj_tags.txt \
     -hidePackage com.android.org.conscrypt \
@@ -952,8 +953,8 @@
     -since $(SRC_API_DIR)/24.txt 24 \
     -since $(SRC_API_DIR)/25.txt 25 \
     -since ./frameworks/base/api/current.txt O \
-		-werror -hide 111 -hide 113 \
-		-overview $(LOCAL_PATH)/core/java/overview.html
+    -werror -hide 111 -hide 113 -hide 121 \
+    -overview $(LOCAL_PATH)/core/java/overview.html \
 
 # Allow the support library to add its own droiddoc options.
 include $(LOCAL_PATH)/../support/droiddoc.mk