beagle-x15: Update kernel and dtb prebuilts am: 8693a56227 am: 00c86d8e2c
am: c2949cbe1d

Change-Id: Ia5ec26fab6cd8245bdd4258ca0fca87a716b42f1
diff --git a/am57xx-beagle-x15-revc.dtb b/am57xx-beagle-x15-revc.dtb
index 99feaca..2b597de 100644
--- a/am57xx-beagle-x15-revc.dtb
+++ b/am57xx-beagle-x15-revc.dtb
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diff --git a/zImage b/zImage
index 713d564..eb7d2de 100644
--- a/zImage
+++ b/zImage
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