tpm: tpm_tis_lpc: fix typo

TPM_TIS_LPC is connected to the LPC bus, not I2C.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>

drivers/tpm/Kconfig

@@ -50,7 +50,7 @@ config TPM_TIS_LPC
 	bool "Enable support for Infineon SLB9635/45 TPMs on LPC"
 	depends on TPM && X86
 	help
-	  This driver supports Infineon TPM devices connected on the I2C bus.
+	  This driver supports Infineon TPM devices connected on the LPC bus.
 	  The usual tpm operations and the 'tpm' command can be used to talk
 	  to the device using the standard TPM Interface Specification (TIS)
 	  protocol