emulators/qemu: fix build on 12 and -CURRENT

Build fails with:

hw/rdma/vmw/pvrdma_cmd.c:19:10: fatal error: 'linux/types.h' file not found

Add two upstream commits to fix this issue:

• 72221d03b85fcfba27a47a2af08ee59150550ced to not include linux/types.h
• 21ab34c9543fe1b6d31b3edbd01a397e7e090d00 to split PVRDMA from RDMA as pvrdma device can't be used on FreeBSD as mremap() system call is missing

PR: 232968
Reported by: Trond.Endrestol@ximalas.info
Approved by: portmgr (build fix blanket)
Obtained from: upstream
MFH: 2018Q4