The driver was returning the wrong limit. The spec says that after calling
vkMapMemory: "subtracting offset bytes from the returned pointer will
always produce an integer multiple of this limit", which is in fact the OS
page size.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/10767
Fixes 8991e6464 ("pvr: Add a Vulkan driver for Imagination Technologies PowerVR Rogue GPUs")
Signed-off-by: Luigi Santivetti <luigi.santivetti@imgtec.com>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28044>