Automatically reformat com32/modules/ethersel.c using Nindent.

Do this for all files except HDT, gPXE and externally maintained
libraries (zlib, tinyjpeg, libpng).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Create the concept of a PCI domain, as a hierarcy of busses, devices
and functions.  This avoids large static-sized arrays and allows for
geographical addressing of devices.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Replace get_config() and execute() with syslinux_config_file() and
syslinux_run_command().

- Sebastian

This patch
- add a new pci_dev_info structure :
    It contains additional informations about the pci devices like
    the product/vendor name and the associated linux kernel module

- add a get_name_from_pci_ids() function in pci/scan.c
    This function reads a pci.ids file from the boot device.
    Then it assign for each pci device, its vendor/product name.
    You just have to put this file in the root directory of your
     isolinux/pxelinux (i.e the root directory of your tfptboot server
    if you are using pxelinux).

- add a get_module_name_from_pci_ids() function in pci/scan.c
    This function reads a modules.pcimap file from the boot device.
    Then it assign for each pci_device its linux kernel module.
    You just have to put this file in the root directory of your
     isolinux/pxelinux (i.e the root directory of your tfptboot server
    if you are using pxelinux).

- Add a call to get_name_from_pci_ids() into the pcitest COM32 module
- Add a call to get_module_name_from_pci_ids() into the pcitest COM32 module

- Fixing typedef struct { ... } s_pci...; by struct pci... {};
- Improving comments
- Fixing the memory allocation to prevent leaks

With this patch, pcitest.c32 act like lspci plus a bonus by displaying
the linux kernel module assiocated to each pci device.

Signed-off-by:Erwan Velu <erwan.velu@free.fr>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Remove bogus clobbering of the DID mask, effectively making the option
to set a mask for the DID unusable.

 From : Erwan Velu <erwan.velu@free.fr>

This patch
- remove the pci detection code from ethersel
- add a find_pci_device() function in the PCI com32 module
- make ethersel using the pci com32 module instead of builtin pci
detection code

Testing and feedback are welcome.

Signed-off-by:Erwan Velu <erwan.velu@free.fr>