Staging: emxx_udc: Fix checkpatch.pl warnings

This patchset fixes the following coding style issues found by checkpatch.pl:
Do not add new typedefs.
Use of volatile is usually wrong.
printk(KERNEL_ERR not prefered.

Changes in v5:
- Fix spelling mistakes
- Justify the removal of volatile
- Replaced pr_err with dev_err when possible
Changes in v4:
- Patchset broken into smaller patches
Changes in v3:
- Create patchset from two patches
Changes in v2:
- First patch reversion

Haneen Mohammed (6):
Staging: emxx_udc: Fix do not add new typedefs
Staging: emxx_udc: Remove volatile from union usb_regs_access
Staging: emxx_udc: Replace custom printk macro ERR with pr_err
Staging: emxx_udc: Replace custom printk macro ERR with dev_err
Staging: emxx_udc: Remove custom printk macro ERR
Staging: emxx_udc: Clean dev_err() logging

 drivers/staging/emxx_udc/emxx_udc.c | 142 ++++++++++++++++++------------------
 drivers/staging/emxx_udc/emxx_udc.h |  27 ++++---
 2 files changed, 84 insertions(+), 85 deletions(-)

1.9.1