Add showmap and procrank to PRODUCT_PACKAGES_DEBUG

So that they are available on device by default.

Test: make
Change-Id: If3c1513d1c086f965a8adc157a96b35c119962c3
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index d8ddb8e..6934bd9 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -321,6 +321,8 @@
     logpersist.start \
     micro_bench \
     perfprofd \
+    procrank \
+    showmap \
     sqlite3 \
     strace \
     sanitizer-status