tpm: unconstify tpm_tis_chip_data

The struct contains an iomem pointer that we later remap and update.
Remove const from the struct definition.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/drivers/tpm/tpm2_tis_mmio.c b/drivers/tpm/tpm2_tis_mmio.c
index dee5503..fc62dcd 100644
--- a/drivers/tpm/tpm2_tis_mmio.c
+++ b/drivers/tpm/tpm2_tis_mmio.c
@@ -135,7 +135,7 @@
 	.cleanup	= tpm_tis_cleanup,
 };
 
-static const struct tpm_tis_chip_data tpm_tis_std_chip_data = {
+static struct tpm_tis_chip_data tpm_tis_std_chip_data = {
 	.pcr_count = 24,
 	.pcr_select_min = 3,
 };