Disable native_coverage for pvmfw binary

The pvmfw binary is compiled against a very limited subset of Rust, and
hence building it with coverage enabled expectedly fails.

Explicitly disable coverage, as instead we will split the pvmfw binary
into separate testable rust crates.

Bug: 272222944
Test: SKIP_ABI_CHECKS=true \
      SOONG_COLLECT_JAVA_DEPS=true \
      EMMA_INSTRUMENT=true \
      EMMA_INSTRUMENT_FRAMEWORK=true \
      CLANG_COVERAGE=true \
      NATIVE_COVERAGE_PATHS='*' \
      m
Change-Id: I3cec0eca8fcac3dbc3269a8535788173f5a9eda5
diff --git a/pvmfw/Android.bp b/pvmfw/Android.bp
index b56df4f..0d845f9 100644
--- a/pvmfw/Android.bp
+++ b/pvmfw/Android.bp
@@ -54,6 +54,7 @@
     // partition image. This is just to package the unstripped file into the
     // symbols zip file for debugging purpose.
     installable: true,
+    native_coverage: false,
 }
 
 raw_binary {