spi: Add Qualcomm QUP SPI controller driver

This patch adds support for the Qualcomm QUP SPI controller that is commonly found in most of Qualcomm SoC-s.

Driver currently supports v1.1.1, v2.1.1 and v2.2.1 HW.
FIFO and Block modes are supported, no support for DMA mode is planned.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>
diff --git a/MAINTAINERS b/MAINTAINERS
index 196d635..d5a418d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -241,6 +241,7 @@
 F:	include/dt-bindings/reset/qcom,ipq4019-reset.h
 F:	drivers/reset/reset-ipq4019.c
 F:	drivers/phy/phy-qcom-ipq4019-usb.c
+F:	drivers/spi/spi-qup.c
 
 ARM MARVELL KIRKWOOD ARMADA-XP ARMADA-38X ARMADA-37XX ARMADA-7K/8K
 M:	Stefan Roese <sr@denx.de>