- implemented SYS_DRVINFO syscall and version handling for the semihosting driver
- removed a support of old oocd versions
renamed kconfig options:
- CONFIG_SEMIHOSTFS_HOST_PATH_MAX_LEN to CONFIG_VFS_SEMIHOSTFS_HOST_PATH_MAX_LEN
- CONFIG_SEMIHOSTFS_MAX_MOUNT_POINTS to CONFIG_VFS_SEMIHOSTFS_MAX_MOUNT_POINTS
CONFIG_VFS_SUPPORT_IO: for basic I/O functions support
CONFIG_VFS_SUPPORT_DIR: for file/directory functions support
CONFIG_VFS_SUPPORT_SELECT: for select support