[PATCH v6 00/16] OMAP2+: UART: Runtime adaptation + cleanup

[Govindraj.R]

Converting uart driver to adapt to pm runtime API's.
Code re-org + cleanup.
Moving some functionality from serial.c to omap-serial.c

Changes involves:
================
1.) Cleaning up certain uart calls from sram_idle func.
2.) Removed all types of uart clock handling code from serial.c
3.) Using hwmod_mux API enable wakeup capability for uart pad during
   hwmod_idle state i.e., when uart clocks are disabled we can enable
   io-pad wakeup capability for uart if mux_data is available for
   given uart. Also during during resume from idle call to uart we need
   to enable clocks back conditionally and this can be done only when io-pad
   wakeup event bit is set for uart_rx pad. So we need a hwmod API
   which can probe the uart pad and let us know whether a uart wakeup
   happened. So omap_hmwod_pad_wakeup_status API is added to meet this
   requirement.
3.) Adapted omap-serial driver to use runtime API's.
4.) Modify serial_init calls to accept uart parameters from board file.
    Like dma_usage, rx_timeout, dma_rx_pollrate, auto_suspend_timeout etc.
5.) Use the omap_prm driver with irq_chaining to wake up uart after clocks are
    cut.
	
Patch series is based on 3.1.0-rc4 + omap_device fixes.