scsi: fusion: mptctl: Use min() macro

Using the real macro is usually more intuitive and readable when the
original file is guaranteed to contain the minmax.h header file and compile
correctly.

Signed-off-by: Yan Zhen <yanzhen@vivo.com>
Link: https://lore.kernel.org/r/20240902013303.909316-1-yanzhen@vivo.com


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>