Collect interrupt statistics, printable via debugfs:

debugfs/omapdss/dispc_irq
debugfs/omapdss/dsi_irq

The counters are reset when printed.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

- dsi_vc_send_short() needs to use dest_per for the peripheral id
- dsi_vc_send_null() was always using channel id 0
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

DSI (Display Serial Interface) driver implements MIPI DSI interface.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

SDI (Serial Display Interface) implements TI Flatlink 3G display
interface.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

RFBI (Remote FrameBuffer Interface) implements MIPI DBI interface.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

VENC (video encoder) driver implements OMAP's analog S-Video/Composite
TV-out.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>
Acked-by: NTony Lindgren <tony@atomide.com>

This implements MIPI DPI interface.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

This file implements DISPC (display controller) block of the OMAP DSS.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

Add more core files to DSS2.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>

The core files of DSS2. DSS2 commits are split a bit artificially to
make the individual commits smaller, and DSS2 doesn't compile properly
without the rest of the core commits. This shouldn't be a problem, as no
configuration uses DSS2 yet.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@nokia.com>