[PATCH v2 03/10] ARM: OMAP: AM33xx hwmod: Add parent-child relationship for PWM subsystem

As part of PWM subsystem integration, PWM subsystem are sharing resources like clock across submodules (ECAP, EQEP & EHRPWM). To handle resource sharing & IP integration 1. Rework on parent child relation between PWMSS and ECAP, EQEP & EHRPWM child devices to support runtime PM. 2. Add support

[PATCH v2 03/10] ARM: OMAP: AM33xx hwmod: Add parent-child relationship for PWM subsystem

As part of PWM subsystem integration, PWM subsystem are sharing resources like clock across submodules (ECAP, EQEP EHRPWM). To handle resource sharing IP integration 1. Rework on parent child relation between PWMSS and ECAP, EQEP EHRPWM child devices to support runtime PM. 2. Add support for