msm: smd_pkt: Remove hexdump of  userspace read/write buffers

Dumping userspace read/write buffers without first copying the data may
lead to a kernel panic if the buffer is unmapped after the buffer has
been validated but before the VFS call returns.

Remove the debug code to print the data using userspace buffers.

CRs-Fixed: 730626
Change-Id: I95c0d751121812fd5d5f30e2b4ee221b1fc36083
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Eric Holmberg <eholmber@codeaurora.org>
Merge "msm: smd_pkt: Remove hexdump of  userspace read/write buffers"
Merge 64affa1ea571792519bd733f81e3cf6d9deed496 on remote branch

Change-Id: I913fc71b3180eaa0d3211d70ad79c5aa34929887
Merge "Merge 64affa1ea571792519bd733f81e3cf6d9deed496 on remote branch"