Rename: ReadDmaBufs -> ReadProcfsDmaBufs am: 7d959fda3c

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/2362611

Change-Id: I2f310ee2ad5535e7e2842fb99e014d358d686d51
Signed-off-by: Automerger Merge Worker <[email protected]>