OMAP4: OPP: correct hwmod name for dsp in opp_def_list

Replace "dsp" with "dsp_c0" in the opp definition list.

The "dsp" name refers to the dsp's iommu hwmod, and not to the
dsp core itself (iommu is not opp-scalable).

"dsp_c0" is the correct hwmod name that should be used in
the OPP definitions list.

Change-Id: I69e89e86de32b2c0f0afdb17533548fab91cee53
Signed-off-by: Juan Gutierrez <jgutierrez@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>

Conflicts:
	arch/arm/mach-omap2/opp4xxx_data.c
devloat
smartreflex: remove unnecessary trace

Signed-off-by: Tero Kristo <t-kristo@ti.com>
I believe opp_find calls need to be rcu locked