nor/niietcm4: fix indentation

nor/niietcm4: fix indentation

After replace CMD_CTX with CMD, the indentation is incorrect.
Fix it.

This change was part of http://openocd.zylin.com/1815 from Paul
Fertser and has been extracted and rebased to simplify the review.

Change-Id: I5d7c40227ceda2e9db8dab88088d74012d2254c4
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5082
Tested-by: jenkins