In order to enable the pmem character device, add ndctl=y to the parameter
of compiling the pmdk library when WITH_BLUESTORE_PMEM is ON. Because
after find_ndctl and find_daxctl are added, the dependency packages
required by WITH_BLUESTORE_PMEM and WITH_RBD_RWL become more different.
So separated these two. libpmem has no version required. libpmemobj
required version >=1.8.
Signed-off-by: Yin Congmin <congmin.yin@intel.com>
At first, libpmem was the only library. Later, pmem related libraries
such as libpmemobj and libpmem2 were gradually added. These libraries
were also integrated into one named pmdk. So rename to pmdk.
Signed-off-by: Yin Congmin <congmin.yin@intel.com>
