tpm: Don't include cr50 in TPL/SPL

At present the security chip is not used in these U-Boot phases. Update
the Makefile to exclude it.

Fix a few logging statements while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/drivers/tpm/Makefile b/drivers/tpm/Makefile
index 8f075b9..f64d200 100644
--- a/drivers/tpm/Makefile
+++ b/drivers/tpm/Makefile
@@ -10,7 +10,7 @@
 obj-$(CONFIG_TPM_ST33ZP24_I2C) += tpm_tis_st33zp24_i2c.o
 obj-$(CONFIG_TPM_ST33ZP24_SPI) += tpm_tis_st33zp24_spi.o
 
-obj-$(CONFIG_TPM2_CR50_I2C) += cr50_i2c.o
+obj-$(CONFIG_$(SPL_TPL_)TPM2_CR50_I2C) += cr50_i2c.o
 obj-$(CONFIG_TPM2_TIS_SANDBOX) += tpm2_tis_sandbox.o
 obj-$(CONFIG_TPM2_TIS_SPI) += tpm2_tis_spi.o
 obj-$(CONFIG_TPM2_FTPM_TEE) += tpm2_ftpm_tee.o
diff --git a/drivers/tpm/cr50_i2c.c b/drivers/tpm/cr50_i2c.c
index b103a6f..76432bd 100644
--- a/drivers/tpm/cr50_i2c.c
+++ b/drivers/tpm/cr50_i2c.c
@@ -309,7 +309,7 @@
 	int status;
 	int ret;
 
-	log_debug("%s: len=%x\n", __func__, buf_len);
+	log_debug("%s: buf_len=%x\n", __func__, buf_len);
 	if (buf_len < TPM_HEADER_SIZE)
 		return -E2BIG;
 
@@ -386,7 +386,7 @@
 	ulong timeout;
 	int ret;
 
-	log_debug("%s: len=%x\n", __func__, len);
+	log_debug("len=%x\n", len);
 	timeout = timer_get_us() + TIMEOUT_LONG_US;
 	do {
 		ret = cr50_i2c_status(dev);