media: marvell-ccic: constify i2c_algorithm structure

Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.

This issue was identified using Coccinelle and the following
semantic patch:

@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };

@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct i2c_algorithm i = { ... };

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/marvell-ccic/cafe-driver.c

@@ -326,7 +326,7 @@ static u32 cafe_smbus_func(struct i2c_adapter *adapter)
 	       I2C_FUNC_SMBUS_WRITE_BYTE_DATA;
 }
 
-static struct i2c_algorithm cafe_smbus_algo = {
+static const struct i2c_algorithm cafe_smbus_algo = {
 	.smbus_xfer = cafe_smbus_xfer,
 	.functionality = cafe_smbus_func
 };