The ZX_VM_FLAG_PERM_* names have been deprecated in favour of the
ZX_VM_PERM_* form, and will shortly be removed from the Fuchsia SDK.

Bug: chromium:925597
Change-Id: Ibb2d5c364fa62c9f7a0a9bb0cd715c41fd757522
Reviewed-on: https://swiftshader-review.googlesource.com/c/24068Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Wez <wez@google.com>