tpm, tpmrm: Mark tpmrm_write as static

sparse complains that tpmrm_write can be made static, and since it is
right we make it static.

Signed-off-by: Peter Huewe <[e-mail]>
Reviewed-by: Jarkko Sakkinen <[e-mail]>
Signed-off-by: Jarkko Sakkinen <[e-mail]>

drivers/char/tpm/tpmrm-dev.c

···
 	return 0;
 }
 
-ssize_t tpmrm_write(struct file *file, const char __user *buf,
+static ssize_t tpmrm_write(struct file *file, const char __user *buf,
 		   size_t size, loff_t *off)
 {
 	struct file_priv *fpriv = file->private_data;