linux: Add uImage support for powerpc64

linux has uImage generation support for powerpc64 as well as powerpc,
since 2.6.15.

Signed-off-by: Erico Nunes <erico.nunes@datacom.ind.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

linux/Config.in

@@ -177,8 +177,9 @@ choice
 config BR2_LINUX_KERNEL_UIMAGE
 	bool "uImage"
 	depends on BR2_arc || BR2_arm || BR2_armeb || BR2_bfin || \
-		   BR2_powerpc || BR2_sh || BR2_sh64 || \
-		   BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
+		   BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le || \
+		   BR2_sh || BR2_sh64 || BR2_mips || BR2_mipsel || \
+		   BR2_mips64 || BR2_mips64el
 	select BR2_LINUX_KERNEL_UBOOT_IMAGE
 
 config BR2_LINUX_KERNEL_APPENDED_UIMAGE