aspeed: Add TPM TIS I2C driver to tpm2 machine feature

This driver requires CONFIG_TCG_TPM and CONFIG_TCG_TIS_I2C.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: If461c2fec0874c09410388bcce7990334b81a726
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.cfg b/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.cfg
index 9479a7b..8a1990d 100644
--- a/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.cfg
+++ b/meta-aspeed/recipes-kernel/linux/linux-aspeed/tpm/tpm2.cfg
@@ -3,4 +3,5 @@
 CONFIG_TCG_TIS_CORE=y
 CONFIG_TCG_TIS=y
 CONFIG_TCG_TIS_SPI=y
+CONFIG_TCG_TIS_I2C=y
 CONFIG_SECURITYFS=y