[coreboot] v3 CS5536 SMBus bug

[Carl-Daniel Hailfinger]

v3 can't use global variables in stage1 or initram. Same applies to
static local variables. See the bug below.

Ideas for fixes? The generic variable infrastructure would be one option.

int smbus_read_byte(u16 device, u8 address)
{
    //BUG here!
    static int first_time = 1;

if (first_time) {
    	smbus_init();
    	first_time = 0;
    }

return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
}

Regards,
Carl-Daniel