uboot-phytec

wandboard: Remove repeated PMIC string

After the conversion to DM_PMIC the following output is seen:

PMIC:  PMIC:  PFUZE100 ID=0x10

Remove the unnecessary PMIC string from the board file to
avoid the repetead string.

Signed-off-by: Fabio Estevam <festevam@gmail.com>