orangepipc: rename to orangepi-pc

Rename orangepipc files, configs, and directories:
- oragepipc_defconfig -> orangepi_pc_defconfig
- board/orangepi/orangepipc -> board/orangepi/orangepi-pc

The purpose of the patch is to improve readability before
adding other boards of orangepi family.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -1151,7 +1151,7 @@ F:	package/libunistring/
 
 N:	Peter Korsgaard <peter@korsgaard.com>
 F:	board/orangepi/
-F:	configs/orangepipc_defconfig
+F:	configs/orangepi_pc_defconfig
 F:	package/flickcurl/
 F:	package/libfastjson/
 F:	package/lzop/

board/orangepi/orangepi-pc/readme.txt

@@ -12,7 +12,7 @@ How to build it
 
 Configure Buildroot:
 
-    $ make orangepipc_defconfig
+    $ make orangepi_pc_defconfig
 
 Compile everything and build the SD card image:
 

configs/orangepi_pc_defconfig

@@ -4,8 +4,8 @@ BR2_ARM_FPU_VFPV4=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_7=y
 BR2_TARGET_GENERIC_HOSTNAME="OrangePi_PC"
 BR2_TARGET_GENERIC_ISSUE="Welcome to Buildroot for the Orange Pi PC"
-BR2_ROOTFS_POST_BUILD_SCRIPT="board/orangepi/orangepipc/post-build.sh"
-BR2_ROOTFS_POST_IMAGE_SCRIPT="board/orangepi/orangepipc/post-image.sh"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/orangepi/orangepi-pc/post-build.sh"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/orangepi/orangepi-pc/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.7.3"