drm/radeon/kms: get HPD info for connectors

[Dan Carpenter]

Hello Alex Deucher,

The patch eed45b30cd14: "drm/radeon/kms: get HPD info for connectors" 
from Dec 4, 2009, leads to the following warning:
"drivers/gpu/drm/radeon/radeon_atombios.c:950 
radeon_get_atom_connector_info_from_supported_devices_table()
	 error: buffer overflow 'supported_devices->info.asConnInfo' 10 <= 15"

drivers/gpu/drm/radeon/radeon_atombios.c
   943          if (frev > 1)
   944                  max_device = ATOM_MAX_SUPPORTED_DEVICE;
   945          else
   946                  max_device = ATOM_MAX_SUPPORTED_DEVICE_INFO;
   947  
   948          for (i = 0; i < max_device; i++) {
   949                  ATOM_CONNECTOR_INFO_I2C ci =
   950                      supported_devices->info.asConnInfo[i];

If max_device is set to ATOM_MAX_SUPPORTED_DEVICE then we read beyond
the end of the asConnInfo[] array and crash.

   951  
   952                  bios_connectors[i].valid = false;
   953  

regards,
dan carpenter