sys/dev/arcmsr: Update Areca RAID driver to version 1.50.00.06.
- Suppressed a harmless warning message, "arcmsr_dr_handle: target=f, lun=0, GONE!!!," which could appear a few seconds after UEFI system boot due to the boot volume UEFI initialization.
- Corrected various typing errors.
- Refactored arcmsr_initialize() to improve code readability.
- Added support for device IDs 1883 and 1886 controllers.
- Introduced support for controllers requiring host memory for the RAID 5 and 6 XOR engines.
Many thanks to Areca for continuing to support FreeBSD.
MFC after: 3 days