arm: zynq: fix a bug in Zynq linker script

Commit 41623c91 moved exception handlers to ".vectores" section
but it missed to adjust Zynq linker script.

Zynq boards hang up after relocation because "_start" symbol
does not point to the correct address and gd->relocaddr gets insane.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Michal Simek <monstr@monstr.eu>
Tested-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/cpu/armv7/zynq/u-boot.lds

@@ -18,6 +18,7 @@ SECTIONS
 	.text :
 	{
 		*(.__image_copy_start)
+		*(.vectors)
 		CPUDIR/start.o (.text*)
 		*(.text*)
 	}