configs/hifive_unleashed: extract common configuration

Move the generic part of the configuration into a new "common" directory
so that it is easier to add similar boards without duplicating the files.

Signed-off-by: Francois Dugast <francois.dugast.foss@gmail.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

board/sifive/hifive-unleashed/readme.txt

@@ -97,7 +97,7 @@ Adjust Buildroot configuration by:
   $ make menuconfig
 
 Change "System configuration" -> "Extra arguments passed to custom scripts"
-value to "-c board/sifive/hifive-unleashed/genimage_spi-nor.cfg", save the
+value to "-c board/sifive/common/genimage_spi-nor.cfg", save the
 configuration and build. This creates a output/images/spi-nor.img that can
 be programmed to the on-board SPI flash.
 

configs/hifive_unleashed_defconfig

@@ -8,14 +8,14 @@ BR2_RISCV_ISA_RVC=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=y
 BR2_TARGET_GENERIC_GETTY_PORT="ttySIF0"
 BR2_SYSTEM_DHCP="eth0"
-BR2_ROOTFS_POST_BUILD_SCRIPT="board/sifive/hifive-unleashed/post-build.sh"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/sifive/common/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
-BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/sifive/hifive-unleashed/genimage_sdcard.cfg"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/sifive/common/genimage_sdcard.cfg"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.10.190"
 BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
-BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/sifive/hifive-unleashed/linux.config.fragment"
+BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/sifive/common/linux.config.fragment"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="sifive/hifive-unleashed-a00"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y