Update manta prebuilt kernel (watchdog atomic context locks)

1bbf0b1 s3c2410_wdt: Add atomic context locking
a4c9d98 usb: gadget: f_audio_source: change max ISO packet size
1d9dbe3 Revert "s3c2410_wdt: Add locking to cpu frequency transition notifier"

Bug: 8173205
Change-Id: I3e16faaf43e205d1a9203a2df0e0b61db1240709
diff --git a/kernel b/kernel
index 663d8e1..ed7bec7 100644
--- a/kernel
+++ b/kernel
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