MIPS: Alchemy: Single kernel for DB1200/1300/1550

Combine support for the DB1200/PB1200, DB1300 and DB1550 boards into
a single kernel image.

defconfig-generated image verified on DB1200, DB1300 and DB1550.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4335/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

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

@@ -2,9 +2,5 @@
 
 void putc(char c)
 {
-#ifdef CONFIG_MIPS_DB1300
-	alchemy_uart_putchar(AU1300_UART2_PHYS_ADDR, c);
-#else
 	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
-#endif
 }