[S] Change in coreboot[main]: device: Add dev_find_device_filter

[Shuo Liu (Code Review)]

Attention is currently required from: Arthur Heymans, Jérémy Compostella, Lean Sheng Tan, Patrick Rudolph.

Shuo Liu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81108?usp=email )

Change subject: device: Add dev_find_device_filter
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Patch Set 1:

(1 comment)

Patchset:

PS1: 
I move this patch out from my dependency chain due to compatibility issue, however, I personally think the usage model of this patch might be worthwhile for a discussion.

The ideal model could be,

struct device *dev_find_all_devices_on_stack(uint8_t socket, uint8_t stack, u16 vendor, u16 device, struct device *from)
{
    int filter_device_on_stack(struct device *dev)
    {
    	struct device *domain = dev_get_pci_domain(dev);
    	if (!domain)
    		return 0;

union xeon_domain_path dn;
    	dn.domain_path = domain->path.domain.domain;
    	if (socket != XEONSP_SOCKET_MAX && dn.socket != socket)
    		return 0;
    	if (stack != XEONSP_STACK_MAX && dn.stack != stack)
    		return 0;
    	if (vendor != XEONSP_VENDOR_MAX && dev->vendor != vendor)
    		return 0;
    	if (device != XEONSP_DEVICE_MAX && dev->device != device)
    		return 0;

return 1;
    };

return dev_find_device_filter(filter_device_on_stack, from);
}

This is allowed by my C99 compiler for intel/archercity, but not fit for all platform configurations. Not sure if this still has values to be adopted in some cases.