gallium: Add PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>

src/gallium/docs/source/screen.rst

@@ -320,6 +320,8 @@ pipe_screen::get_compute_param.
   allocation in bytes.  Value type: ``uint64_t``.
 * ``PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY``: Maximum frequency of the GPU
   clock in MHz. Value type: ``uint32_t``
+* ``PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS``: Maximum number of compute units
+  Value type: ``uint32_t``
 
 .. _pipe_bind:
 

src/gallium/include/pipe/p_defines.h

@@ -645,7 +645,8 @@ enum pipe_compute_cap
    PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE,
    PIPE_COMPUTE_CAP_MAX_INPUT_SIZE,
    PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
-   PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY
+   PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY,
+   PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS
 };
 
 /**