MIPS: Fix build with DEBUG_ZBOOT and MACH_JZ4780

Ingenic SoC declares ZBOOT support, but debug definitions are missing
for MACH_JZ4780 resulting in a build failure when DEBUG_ZBOOT is set.
The UART addresses are same as with JZ4740, so fix by covering JZ4780
with those as well.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12830/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/boot/compressed/uart-16550.c

@@ -17,7 +17,7 @@
 #define PORT(offset) (CKSEG1ADDR(AR7_REGS_UART0) + (4 * offset))
 #endif
 
-#ifdef CONFIG_MACH_JZ4740
+#if defined(CONFIG_MACH_JZ4740) || defined(CONFIG_MACH_JZ4780)
 #include <asm/mach-jz4740/base.h>
 #define PORT(offset) (CKSEG1ADDR(JZ4740_UART0_BASE_ADDR) + (4 * offset))
 #endif