staging: lustre: Fix incompatible argument in osc_match_base

sparse warn about _u32 used for two arguments in function
osc_match_base instead of enum ldlm_type and enum ldlm_mode as
used in the prototype.

Signed-off-by: Maxime Rossi Bellom <mrossibellom@gmail.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>