ARM: debug: Add iProc UART3 debug addresses

Broadcom iProc SoCs typically use the UART3 for debug/console, provide a
known good location for that.
Signed-off-by: Clément Peron <clement.peron@devialet.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/Kconfig.debug

@@ -207,6 +207,14 @@ choice
 		depends on ARCH_BCM_HR2
 		select DEBUG_UART_8250
 
+	config DEBUG_BCM_IPROC_UART3
+		bool "Kernel low-level debugging on BCM IPROC UART3"
+		depends on ARCH_BCM_CYGNUS
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to the third serial port on these devices.
+
 	config DEBUG_BCM_KONA_UART
 		bool "Kernel low-level debugging messages via BCM KONA UART"
 		depends on ARCH_BCM_MOBILE
@@ -1565,6 +1573,7 @@ config DEBUG_UART_PHYS
 	default 0x18000400 if DEBUG_BCM_HR2
 	default 0x18010000 if DEBUG_SIRFATLAS7_UART0
 	default 0x18020000 if DEBUG_SIRFATLAS7_UART1
+	default 0x18023000 if DEBUG_BCM_IPROC_UART3
 	default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
 	default 0x20001000 if DEBUG_HIP01_UART
 	default 0x20060000 if DEBUG_RK29_UART0
@@ -1685,6 +1694,7 @@ config DEBUG_UART_VIRT
 	default 0xf1002000 if DEBUG_MT8127_UART0
 	default 0xf1006000 if DEBUG_MT6589_UART0
 	default 0xf1009000 if DEBUG_MT8135_UART3
+	default 0xf1023000 if DEBUG_BCM_IPROC_UART3
 	default 0xf11f1000 if DEBUG_VERSATILE
 	default 0xf1600000 if DEBUG_INTEGRATOR
 	default 0xf1c28000 if DEBUG_SUNXI_UART0
@@ -1800,7 +1810,7 @@ config DEBUG_UART_8250_WORD
 		DEBUG_KEYSTONE_UART0 || DEBUG_KEYSTONE_UART1 || \
 		DEBUG_ALPINE_UART0 || \
 		DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
-		DEBUG_DAVINCI_DA8XX_UART2 || \
+		DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_BCM_IPROC_UART3 || \
 		DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2
 
 config DEBUG_UART_8250_PALMCHIP