add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/char/tpm/tpm-dev-common.c
..
..
@@ -20,6 +20,7 @@
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 #include "tpm-dev.h"
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 static struct workqueue_struct *tpm_dev_wq;
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+static DEFINE_MUTEX(tpm_dev_wq_lock);
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 static ssize_t tpm_dev_transmit(struct tpm_chip *chip, struct tpm_space *space,
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 				u8 *buf, size_t bufsiz)