board/firefly_rk3288: Update ARM variant and fix kernel repo

This commit updates the two firefly_rk3288 defconfigs recently
added. First we switch to the ARM cortex-A17 core. Second,
we switch the kernel github access from SSH to HTTPS, which
is suitable for anonymous access.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/firefly_rk3288_defconfig

@@ -1,5 +1,5 @@
 BR2_arm=y
-BR2_cortex_a12=y
+BR2_cortex_a17=y
 BR2_ARM_FPU_NEON_VFPV4=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y
 BR2_TARGET_GENERIC_HOSTNAME="firefly-rk3288"
@@ -8,7 +8,7 @@ BR2_ROOTFS_POST_BUILD_SCRIPT="board/firefly/firefly-rk3288/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/firefly/firefly-rk3288/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_GIT=y
-BR2_LINUX_KERNEL_CUSTOM_REPO_URL="git@github.com:mmind/linux-rockchip.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/mmind/linux-rockchip.git"
 BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="ccb89e9b5657b4911c16d08e1581121222ee12c4"
 BR2_LINUX_KERNEL_DEFCONFIG="rk3288_veyron"
 BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x02000000"

configs/firefly_rk3288_demo_defconfig

@@ -1,5 +1,5 @@
 BR2_arm=y
-BR2_cortex_a12=y
+BR2_cortex_a17=y
 BR2_ARM_FPU_NEON_VFPV4=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y
 BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
@@ -10,7 +10,7 @@ BR2_ROOTFS_POST_BUILD_SCRIPT="board/firefly/firefly-rk3288/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/firefly/firefly-rk3288/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_GIT=y
-BR2_LINUX_KERNEL_CUSTOM_REPO_URL="git@github.com:mmind/linux-rockchip.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/mmind/linux-rockchip.git"
 BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="ccb89e9b5657b4911c16d08e1581121222ee12c4"
 BR2_LINUX_KERNEL_DEFCONFIG="rk3288_veyron"
 BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x02000000"