platform: msm_shared: Improve nand read performance for 9x25 and 9x35

Modify qpic nand and bam drivers to perform a single bam transfer
for each page, instead of each codeword.

CRs-Fixed: 615966
Change-Id: I63cc67c17399059f0e5b70f53acff46bb0e63e9e
2 files changed