pbio/platform/prime_hub: Disable slot UI.

This may be introduced in a future release when the host side is
closer to being ready.

lib/pbio/platform/prime_hub/pbsysconfig.h

@@ -10,11 +10,11 @@
 #define PBSYS_CONFIG_BLUETOOTH                      (1)
 #define PBSYS_CONFIG_BLUETOOTH_TOGGLE               (1)
 #define PBSYS_CONFIG_BLUETOOTH_TOGGLE_BUTTON        (512) // PBIO_BUTTON_RIGHT_UP, but enum value cannot be used here.
-#define PBSYS_CONFIG_HMI_NUM_SLOTS                  (5)
+#define PBSYS_CONFIG_HMI_NUM_SLOTS                  (0)
 #define PBSYS_CONFIG_HUB_LIGHT_MATRIX               (1)
 #define PBSYS_CONFIG_MAIN                           (1)
 #define PBSYS_CONFIG_STORAGE                        (1)
-#define PBSYS_CONFIG_STORAGE_NUM_SLOTS              (PBSYS_CONFIG_HMI_NUM_SLOTS)
+#define PBSYS_CONFIG_STORAGE_NUM_SLOTS              (5)
 #define PBSYS_CONFIG_STORAGE_RAM_SIZE               (258 * 1024)
 #define PBSYS_CONFIG_STORAGE_ROM_SIZE               (PBDRV_CONFIG_BLOCK_DEVICE_W25QXX_STM32_SIZE)
 #define PBSYS_CONFIG_STORAGE_OVERLAPS_BOOTLOADER_CHECKSUM (0)