configs/raspberry2_defconfig: Fix typo

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

configs/raspberrypi2_defconfig

@@ -18,7 +18,7 @@ BR2_LINUX_KERNEL_CUSTOM_GIT=y
 BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/raspberrypi/linux.git"
 BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="f90f981770e3ac8506dc84c9cd01471faaa0b0c2"
 BR2_LINUX_KERNEL_DEFCONFIG="bcm2709"
-BR2_LINUX_KERNEL_ZIMAGE=yo
+BR2_LINUX_KERNEL_ZIMAGE=y
 
 # Build the DTB from the kernel sources
 BR2_LINUX_KERNEL_DTS_SUPPORT=y