vf610: add support for Phytec PCM052

Devices supported are:
- NFC (NAND FLASH)
- MMC
- QSPI (SPI NOR FLASH)
- I2C (only bus 2)
- I2C RTC
- I2C EEPROM
- FEC

Patch-series: 2
- remove useless CONFIG_SYS_SPD_BUS_NUM from config
- remove include of config_cmd_default.h
- remove duplicate CONFIG_CMD_NET

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
diff --git a/board/phytec/pcm052/MAINTAINERS b/board/phytec/pcm052/MAINTAINERS
new file mode 100644
index 0000000..a877436
--- /dev/null
+++ b/board/phytec/pcm052/MAINTAINERS
@@ -0,0 +1,6 @@
+PCM052 BOARD
+M:	Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
+S:	Maintained
+F:	board/phytec/pcm052/
+F:	include/configs/pcm052.h
+F:	configs/pcm052_defconfig