rockchip: defconfig: puma-rk3399: update defconfig with video-support

With HDMI output for the RK3399 working, this update the RK3399-Q7
(Puma) defconfig for the new functionality:
1. enables PMIC command (to check if the HDMI voltages are correct)
      +CONFIG_CMD_PMIC=y
      +CONFIG_CMD_REGULATOR=y
2. enables video-output (via HDMI)
      +CONFIG_DM_VIDEO=y
      +CONFIG_DISPLAY=y
      +CONFIG_VIDEO_ROCKCHIP=y
      +CONFIG_DISPLAY_ROCKCHIP_HDMI=y
3. turns on the 'dcache'-command (for a dcache flush) for our QA to
   fill the framebuffer using 'mw.l'
      +CONFIG_CMD_CACHE=y
4. turns on the 'bmp'-command
      +CONFIG_CMD_BMP=y

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>

configs/puma-rk3399_defconfig

@@ -28,7 +28,11 @@ CONFIG_CMD_SPI=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_BMP=y
+CONFIG_CMD_CACHE=y
 CONFIG_CMD_TIME=y
+CONFIG_CMD_PMIC=y
+CONFIG_CMD_REGULATOR=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
 CONFIG_REGMAP=y
@@ -75,4 +79,8 @@ CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_GENERIC=y
 CONFIG_USB_STORAGE=y
+CONFIG_DM_VIDEO=y
+CONFIG_DISPLAY=y
+CONFIG_VIDEO_ROCKCHIP=y
+CONFIG_DISPLAY_ROCKCHIP_HDMI=y
 CONFIG_ERRNO_STR=y