ARM: PRIMA2: enable AUTO_ZRELADDR for SIRF in Kconfig

prima2 and marco have different memory base address. prima2
begins from 0 and marco begins from 0x40000000.
This patch enables AUTO_ZRELADDR so that kernel can detect
the physical address automatically.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
CC: Mark Rutland <mark.rutland@arm.com>

arch/arm/Kconfig

@@ -394,6 +394,7 @@ config ARCH_GEMINI
 config ARCH_SIRF
 	bool "CSR SiRF"
 	select ARCH_REQUIRE_GPIOLIB
+	select AUTO_ZRELADDR
 	select COMMON_CLK
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_IRQ_CHIP