i2c: stm32f7: remove warning when compiling with W=1

[ Upstream commit 348e46fbb4cdb2aead79aee1fd8bb25ec5fd25db ]

Remove the following warning:

drivers/i2c/busses/i2c-stm32f7.c:315:
warning: cannot understand function prototype:
'struct stm32f7_i2c_spec i2c_specs[] =

Replace a comment starting with /** by simply /* to avoid having
it interpreted as a kernel-doc comment.

Fixes: aeb068c5 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: NAlain Volmat <alain.volmat@st.com>
Reviewed-by: NPierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Signed-off-by: NSasha Levin <sashal@kernel.org>

drivers/i2c/busses/i2c-stm32f7.c

@@ -297,7 +297,7 @@ struct stm32f7_i2c_dev {
 	bool use_dma;
 };
 
-/**
+/*
  * All these values are coming from I2C Specification, Version 6.0, 4th of
  * April 2014.
  *