mb/google/kahlee/careena: Add 20ms delay to capture

define wakeup-delay-ms to 20ms. This avoids the pop
noise heard at the start of capture.

BUG=b:119926436
TEST=with kernel patch
https://lore.kernel.org/patchwork/patch/1029806/
no pop sound heard at start of capture

Change-Id: I299a584ef2ba66d1e752515100cbe3919b2108f6
Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Reviewed-on: https://review.coreboot.org/c/30726
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/kahlee/variants/careena/devicetree.cb

@@ -98,6 +98,7 @@ chip soc/amd/stoneyridge
 	end #domain
 	device mmio 0xfedc2000 on
 		chip drivers/generic/adau7002
+			register "wakeup_delay" = "20"
 			device generic 0.0 on end
 		end
 		chip drivers/i2c/da7219