misc: pmic: use I2C_SET_BUS in pmic I2C

Instead of using directly the i2c_set_bus() function,
the I2C_SET_BUS macro must be used to avoid build
errors for targets without multibus I2C.

Signed-off-by: Stefano Babic <sbabic@denx.de>

drivers/misc/pmic_i2c.c

@@ -81,7 +81,7 @@ int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
 
 int pmic_probe(struct pmic *p)
 {
-	i2c_set_bus_num(p->bus);
+	I2C_SET_BUS(p->bus);
 	debug("PMIC:%s probed!\n", p->name);
 	if (i2c_probe(pmic_i2c_addr)) {
 		printf("Can't find PMIC:%s\n", p->name);