Update hotwording firmware for 19.2MHz MCLK

The updated rt5677_elf_vad is made at cl/94098342 with
MCLK=19.2MHz.

BUG=b:25875632
TEST=Always-on hotwording works on Ryu

Change-Id: I5e9a847fb1403f19227887d06cdfa820f9239b7e
Signed-off-by: Ben Zhang <benzh@google.com>
diff --git a/rt5677_elf_vad b/rt5677_elf_vad
index 1f700de..4198dd6 100755
--- a/rt5677_elf_vad
+++ b/rt5677_elf_vad
Binary files differ