dipper: Update namespace_imports to sdm845-4.19

Change-Id: Ib1ff34ccf42ae39beb5a372de564844cb073b057

Android.bp

@@ -5,7 +5,7 @@
 soong_namespace {
     imports: [
         "hardware/qcom-caf/common/libqti-perfd-client",
-        "hardware/qcom-caf/sm8250",
+        "hardware/qcom-caf/sdm845-4.19",
         "hardware/xiaomi",
         "vendor/qcom/opensource/display",
         "vendor/xiaomi/sdm845-common",