dt-bindings: interrupt-controller: arm,gic-v3: Describe ESPI range su…

…pport

GICv3.1 introduces support for new interrupt ranges, one of them being
the Extended SPI range (ESPI). The DT binding is extended to deal with
it as a new interrupt class.

Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml

@@ -44,11 +44,12 @@ properties:
       be at least 4.
 
       The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
-      interrupts. Other values are reserved for future use.
+      interrupts, 2 for interrupts in the Extended SPI range. Other values
+      are reserved for future use.
 
       The 2nd cell contains the interrupt number for the interrupt type.
       SPI interrupts are in the range [0-987]. PPI interrupts are in the
-      range [0-15].
+      range [0-15]. Extented SPI interrupts are in the range [0-1023].
 
       The 3rd cell is the flags, encoded as follows:
       bits[3:0] trigger type and level flags.