ARM: PRIMA2: provide two DEBUG_LL ports for prima2 and marco

prima2 and marco has different memory base, the old code will
fail if we enable DEBUG_LL in marco.
this patch adds two debuf port, while debugging, we select one
of PRIMA2 and MARCO debug ports, in the products, we disable
DEBUG_LL.

Signed-off-by: Barry Song <Baohua.Song@csr.com>

arch/arm/mach-prima2/include/mach/uncompress.h

@@ -25,6 +25,9 @@ static __inline__ void putc(char c)
 	 * during kernel decompression, all mappings are flat:
 	 *  virt_addr == phys_addr
 	 */
+	if (!SIRFSOC_UART1_PA_BASE)
+		return;
+
 	while (__raw_readl((void __iomem *)SIRFSOC_UART1_PA_BASE + SIRFSOC_UART_TXFIFO_STATUS)
 		& SIRFSOC_UART1_TXFIFO_FULL)
 		barrier();