firmware: variant: Update README with customization description

Test: Manual
Bug: 37716086

Change-Id: If227d205b804d7f94085baed5a988fd6dfae845f
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
1 file changed
tree: 9df6496845d460e303d2d9a338e191c9bb7c9455
  1. .gitignore
  2. contexthubhal/
  3. firmware/
  4. inc/
  5. lib/
  6. sensorhal/
  7. util/