meta-aspeed: Enable tpm2 kernel config

Append tpm2 in MACHINE_FEATURES to enable related kernel configs
MACHINE_FEATURES:append = " tpm2"

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: Ie6b50d81040de2863487cffc449193ec9462bf89
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.scc b/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.scc
new file mode 100644
index 0000000..088148f
--- /dev/null
+++ b/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.scc
@@ -0,0 +1,3 @@
+define KFEATURE_DESCRIPTION "Enable TPM 2.0"
+
+kconf hardware tpm2.cfg