gallium/svga: handle query_rendered caps
gallium/svga: handle query_rendered caps

All the values are are currently hardcoded. One could use
some heuristics to determine the amount of video memory if
a callback to the host is not available.

Do we what to advertise the driver as hardwar accelerated ?

Cc: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>
Cc: José Fonseca <3bcec90dbf5a68342d86695ff042005b96b780f5@gmail.com>
Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>

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