update buildroot to 2017.02.11

bsp/buildroot-2017.02.11/board/freescale/mpc8315erdb/readme.txt

@@ -0,0 +1,40 @@
+You'll need to program the files created by buildroot into the flash.
+The fast way is to tftp transfer the files via one of the network interfaces.
+
+Alternatively you can transfer the files via serial console with an Ymodem
+file transfer from your terminal program by using a "loady" command
+from the u-boot prompt instead of the "tftp ..." commands stated below.
+Beware that serial console file transfers are quite slow!
+
+1. Program the kernel to NAND flash
+
+    => tftp $loadaddr uImage
+    => nand erase 0x100000 0x1e0000
+    => nand write $loadaddr 0x100000 0x1e0000
+
+2. Program the DTB to NAND flash
+
+    => tftp $loadaddr mpc8315erdb.dtb
+    => nand erase 0x2e0000 0x20000
+    => nand write $loadaddr 0x2e0000 0x20000
+
+3. Program the root filesystem to NAND flash
+
+    => tftp $loadaddr rootfs.jffs2
+    => nand erase 0x400000 0x1c00000
+    => nand write $loadaddr 0x400000 $filesize
+
+4. Booting your new system
+
+    => setenv nandboot 'setenv bootargs root=/dev/mtdblock3 rootfstype=jffs2 console=$consoledev,$baudrate;nand read $fdtaddr 0x2e0000 0x20000;nand read $loadaddr 0x100000 0x1e0000;bootm $loadaddr - $fdtaddr'
+
+    If you want to set this boot option as default:
+
+    => setenv bootcmd 'run nandboot'
+    => saveenv
+
+    ...or for a single boot:
+
+    => run nandboot
+
+    You can login with user "root".