pmic:i2c: Replace legacy I2C_SET_BUS macro with i2c_set_bus_num()

After introduction of unified i2c model, the I2C_SET_BUS() macro is regarded
as obsolete.
Hence it is replaced with i2c_set_bus_num() function call.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@ti.com>

drivers/power/power_i2c.c

@@ -98,7 +98,7 @@ int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
 
 int pmic_probe(struct pmic *p)
 {
-	I2C_SET_BUS(p->bus);
+	i2c_set_bus_num(p->bus);
 	debug("Bus: %d PMIC:%s probed!\n", p->bus, p->name);
 	if (i2c_probe(pmic_i2c_addr)) {
 		printf("Can't find PMIC:%s\n", p->name);