Add pvmfw partition to target files

The pvmfw is included in an `m` build but not in the distribution files.
Apply the same treatment as the dtbo partition to copy the pvmfw
partition to dist/ since, similar to the dtbo image, the pvmfw image is
generally provided as a prebuilt image.

Test: make dist
Bug: 174457787
Change-Id: I6f42517ba42db92e90048d1236d7255ccbd73f73
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index da189f3..9c3ca31 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -110,9 +110,9 @@
 # The partitions allowed to be signed by AVB (Android Verified Boot 2.0). Note
 # that system_other is not in the list because we don't want to include its
 # descriptor into vbmeta.img.
-AVB_PARTITIONS = ('boot', 'dtbo', 'odm', 'product', 'recovery', 'system',
-                  'system_ext', 'vendor', 'vendor_boot', 'vendor_dlkm',
-                  'odm_dlkm')
+AVB_PARTITIONS = ('boot', 'dtbo', 'odm', 'product', 'pvmfw', 'recovery',
+                  'system', 'system_ext', 'vendor', 'vendor_boot',
+                  'vendor_dlkm', 'odm_dlkm')
 
 # Chained VBMeta partitions.
 AVB_VBMETA_PARTITIONS = ('vbmeta_system', 'vbmeta_vendor')