When Soong creates per-module aconfig files by merging aconfig files
from dependencies $(sort) is no longer sufficient to dedup identical
flags. Pass --dedup to aconfig dump.
Fixes: 313698230
Test: m out/target/product/vsoc_x86_64/system/etc/aconfig_flags.pb
Change-Id: Icd8a3fbff8fe0be1dbb617ac1db4bd73f35b2d2f
The /<partition>/etc/aconfig_flags.textproto files are no longer needed
(all clients have migrated to use /<partition>/etc/aconfig_flags.pb).
Stop generating them.
Also update how an empty file is generated in case there are no flags
for a given partition. Previously
echo "" > file
was used, which resulted in a file containing a newline, which caused
`printflags` to error out. Change the command to
echo -n > file
to create an empty file.
Bug: 302452801
Bug: 304278614
Test: m nothing
Change-Id: I2f7d23df4e888046651b4155b75c5006d0b5e1d7
