rcar-gen3: linux-renesas: Upgrade Linux BSP to v3.5.3

This commit upgrades Linux BSP to v3.5.3
and adds device tree file for M3 Salvator-XS board to salvator-x.conf.

Linux BSP to v3.5.3 updates following items:

Kernel core
- Add workaround for PRR register of R-Car M3 WS1.1.
  (Fix printing cpu info.)
- Add device tree file for Salvator-XS board with R-Car M3.
- Fix R-Car M3 Salvator-X device tree file for MIX function
  of Audio driver.

Power Management
- Mark the OPP to be used during system suspend.
- Enable CPUIdle function.
- Apply new CPUIdle parameters.

Audio driver
- Confirm this driver can resume with Suspend to RAM during capture.
- Avoid SSI_MODEx settings for SSI8.
- Clear DE bit only in PDMACHCR when it stops.
- Tidyup Audio-DMAC channel for DVC.
- Enable PCM RATE until 192000.
- Fix the setting of saved_rate during the resume process.

Display driver
- Fix the problem that the flicker may occur during rendering
  by the application.
- Add brs option check for VGA connector.
- Add routing set for digital RGB previously.

DMA Engine driver
- Fix release resources after interrupt process.

Ethernet driver
- Add phy-reset-gpios.
  This driver can work after Suspend to RAM with Salvator-XS board.
- Fix GIS_PTMF bit clearing in ravb_ptp_interrupt.

I2C driver
- Revert and fix about unnecessary function related to Suspend to RAM.

MSIOF driver
- Fix SPI division value setting of R-Car M3
  based on hardware specification.
- Allow interrupts during msiof slave mode transfer wait.
- Revert and fix about unnecessary function related to Suspend to RAM.

RWDT driver
- Fix timeout count calculation.

SCIF/HSCIF driver
- Fix panic when serial console and DMA are enabled.
- Revert about unnecessary function related to Suspend to RAM.

SD/MMC driver
- Wait for CBSY instead of SCLKDIVEN.
- Add re-tuning condition.
- Add internal DMAC reset at startup.
- Add the driver strength setting.
  eMMC HS400 mode can work with R-Car M3 WS1.1 on Salvator-XS board.

Thermal driver
- Fix to support thermal for both M3 WS1.0 and WS1.1.

Video Capture driver
- Fix resuming procedure.
- Fix first field detection control.
- Fix 720x480p transfer rate.
- Fix video standard selection register setting.

Change-Id: I3b0d6237c9d0c56a9f2870f1fde89ea215f163cd
Signed-off-by: Thao Nguyen <thao.nguyen.yb@rvc.renesas.com>
Signed-off-by: Takamitsu Honda <takamitsu.honda.pv@renesas.com>

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