meta-aspeed: fix tpm2 MACHINE_FEATURE

The tpm2.cfg file was missing from the SRC_URI, so the metadata
feature wasn't working properly.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Iae1034b576bbce5b03a1e343b920400ca99e7399
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc b/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc
index 305b6ca..73f0614 100644
--- a/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc
+++ b/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc
@@ -12,7 +12,7 @@
              file://defconfig \
              file://rsa_oem_fitimage_key.key;sha256sum=eeb4ff2ebbfbd97b6254fe6dbaeea41067e54c65176c233ec7b2ab2decf1ddcd \
              file://rsa_oem_fitimage_key.crt;sha256sum=45f5a55497cce8040999bf9f3214d471ac7b83ab7acef41c4425a34662e8372e \
-             ${@bb.utils.contains('MACHINE_FEATURES', 'tpm2', 'file://tpm/tpm2.scc', '', d)} \
+             ${@bb.utils.contains('MACHINE_FEATURES', 'tpm2', 'file://tpm/tpm2.scc file://tpm/tpm2.cfg', '', d)} \
            "
 
 LINUX_VERSION_EXTENSION ?= "-${SRCREV}"