spi: cadence_qspi: Add support for Versal NET platform

Trivial changes to support cadence ospi driver for Versal NET platform.
Also avoid ospi flash reset for now.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/0789141f432189aab69bc496fe33e0218d1d7510.1663589964.git.michal.simek@amd.com
diff --git a/arch/arm/mach-versal-net/include/mach/hardware.h b/arch/arm/mach-versal-net/include/mach/hardware.h
index 2eb5498..808ce48 100644
--- a/arch/arm/mach-versal-net/include/mach/hardware.h
+++ b/arch/arm/mach-versal-net/include/mach/hardware.h
@@ -25,3 +25,7 @@
 	VERSAL_NET_EMU = 2,
 	VERSAL_NET_QEMU = 3,
 };
+
+#define VERSAL_SLCR_BASEADDR	0xF1060000
+#define VERSAL_AXI_MUX_SEL	(VERSAL_SLCR_BASEADDR + 0x504)
+#define VERSAL_OSPI_LINEAR_MODE	BIT(1)