* src/lpc2xxx_misc.c: Added hal_lpc_can_init() to initialize CAN channels * cdl/hal_arm_lpc24xx.cdl: Added a number of CYGHWR_HAL_ARM_LPC2XXX_xxx options for device driver compatibility reasons. Some LPC2xxx device drivers rely on these definitions. Moved some configuration options to make configuration more intuitive in configuration tool. Added CYGNUM_HAL_ARM_LPC2XXX_CAN_CLK option for configuration of CAN peripheral clock. * include/var_io.h: Added macro CYGARC_HAL_LPC24XX_SET_PIN_FUN() * src/lpc2xxx_misc.c: Added function hal_lpc_set_pclk() to set peripheral clocks easily. Initialize peripheral clocks in hal_hardware_init() according to configuration.