backlight: omap1: use pr_info() instead of printk()

backlight: omap1: use pr_info() instead of printk()

Use pr_info() instead of printk() to allow dynamic debugging.  The pr_fmt
prefix for pr_ macros is used.  Also fix checkpatch warning as below:

WARNING: Prefer pr_info(... to printk(KERN_INFO, ...

[[email protected]: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <[email protected]>
Cc: Andrzej Zaborowski <[email protected]>
Cc: Richard Purdie <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>