imx: add imx8x capricorn giedi board

Add support for i.MX8X based Capricorn Giedi SoM.

Supported interfaces: GPIO, ENET, eMMC, I2C, UART.

Console output:

  U-Boot SPL 2020.01-00003-gfd1c98f (Jan 07 2020 - 15:51:25 +0100)
  Trying to boot from MMC1
  Load image from MMC/SD 0x3e400

  U-Boot 2020.01-00003-gfd1c98f (Jan 07 2020 - 15:51:25 +0100) ##v01.07

  CPU:   NXP i.MX8QXP RevB A35 at 1200 MHz at 30C

  Model: Siemens Giedi
  Board: Capricorn
  Boot:  MMC0
  DRAM:  1022 MiB
  MMC:   FSL_SDHC: 0
  Loading Environment from MMC... OK
  In:    serial@5a080000
  Out:   serial@5a080000
  Err:   serial@5a080000
  Net:   eth1: ethernet@5b050000 [PRIME]
  Autobooting in 1 seconds, press "<Esc><Esc>" to stop

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/include/configs/siemens-ccp-common.h b/include/configs/siemens-ccp-common.h
new file mode 100644
index 0000000..01051c8
--- /dev/null
+++ b/include/configs/siemens-ccp-common.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Be very careful updating CONFIG_IDENT_STRING
+ * This string will control the update flow whether an U-Boot should be
+ * updated or not. If the version of installed U-Boot (in flash) is smaller
+ * than the version to be installed (from update file), an update will
+ * be performed.
+ *
+ * General rules:
+ * 1. First 4 characters ' ##v' or  IDENT_MAGIC represent kind of a magic number
+ *    to identify the following strings after easily. Don't change them!
+ *
+ * 2. First 2 digits after 'v' or CCP_MAJOR are updated with U-Boot version
+ *    change, e.g. from 2015.04 to 2018.03
+ *
+ * 3. Second 2 digits after '.' or CCP_MINOR are updated if we want to upgrade
+ *    U-Boot within an U-Boot version.
+ */
+#define CCP_IDENT_MAGIC			" ##v"
+#define GENERATE_CCP_VERSION(MAJOR, MINOR)	CCP_IDENT_MAGIC MAJOR "." MINOR