ARM: OMAP2+: PRM: provide generic API for system reset

This patch combines the various prm_warm_reset calls under a common
API prm_reset_system, and adds the SoC specific implementation under
prm_ll_data.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Nishanth Menon <nm@ti.com>

diff --cc arch/arm/mach-omap2/am33xx-restart.c
Simple merge

diff --cc arch/arm/mach-omap2/omap2-restart.c
Simple merge

diff --cc arch/arm/mach-omap2/omap3-restart.c
Simple merge

diff --cc arch/arm/mach-omap2/omap4-restart.c
Simple merge

diff --cc arch/arm/mach-omap2/prm.h
Simple merge

diff --cc arch/arm/mach-omap2/prm2xxx.c
Simple merge

diff --cc arch/arm/mach-omap2/prm2xxx.h
Simple merge

diff --cc arch/arm/mach-omap2/prm33xx.c
Simple merge

diff --cc arch/arm/mach-omap2/prm33xx.h
Simple merge

diff --cc arch/arm/mach-omap2/prm3xxx.c
Simple merge

diff --cc arch/arm/mach-omap2/prm3xxx.h
Simple merge

diff --cc arch/arm/mach-omap2/prm44xx.c
Simple merge

diff --cc arch/arm/mach-omap2/prm_common.c
Simple merge