ARM: imx: change the way imx-uarts are registered

ARM: imx: change the way imx-uarts are registered

For mx1_defconfig this yields:

	add/remove: 1/0 grow/shrink: 1/4 up/down: 49/-108 (-59)
	function                                     old     new   delta
	imx1_imx_uart_data                             -      48     +48
	kernel_config_data                          7277    7278      +1
	imx_add_imx_uart_1irq                        132     128      -4
	imx_add_imx_uart_3irq                        164     156      -8
	scb9328_init                                  96      64     -32
	mx1ads_init                                  220     156     -64

for mx21_defconfig this yields:

	add/remove: 1/0 grow/shrink: 0/3 up/down: 64/-52 (12)
	function                                     old     new   delta
	imx21_imx_uart_data                            -      64     +64
	imx_add_imx_uart_3irq                        160     156      -4
	imx_add_imx_uart_1irq                        140     136      -4
	mx21ads_board_init                           220     176     -44

for a random mx25 config this yields:

	add/remove: 1/0 grow/shrink: 0/5 up/down: 80/-56 (24)
	function                                     old     new   delta
	imx25_imx_uart_data                            -      80     +80
	imx_add_imx_uart_3irq                        160     156      -4
	imx_add_imx_uart_1irq                        140     136      -4
	mx25pdk_init                                 288     272     -16
	eukrea_mbimxsd_baseboard_init                272     256     -16
	eukrea_cpuimx25_init                         252     236     -16

for mx27_defconfig this yields:

	add/remove: 1/0 grow/shrink: 0/10 up/down: 96/-280 (-184)
	function                                     old     new   delta
	imx27_imx_uart_data                            -      96     +96
	imx_add_imx_uart_3irq                        160     156      -4
	imx_add_imx_uart_1irq                        140     136      -4
	pca100_init                                  560     544     -16
	mx27pdk_init                                 112      96     -16
	mx27lite_init                                 92      76     -16
	eukrea_cpuimx27_init                         332     316     -16
	pcm038_init                                  388     348     -40
	mxt_td60_board_init                          320     280     -40
	eukrea_mbimx27_baseboard_init                476     436     -40
	mx27ads_board_init                           368     280     -88

and finally for mx3_defconfig:

	add/remove: 2/0 grow/shrink: 0/9 up/down: 128/-344 (-216)
	function                                     old     new   delta
	imx31_imx_uart_data                            -      80     +80
	imx35_imx_uart_data                            -      48     +48
	imx_add_imx_uart_1irq                        132     128      -4
	imx_add_imx_uart_3irq                        164     152     -12
	mx31moboard_devboard_init                    360     344     -16
	mx31lite_db_init                             176     160     -16
	mx31moboard_smartbot_init                    384     360     -24
	kzm_board_init                               232     208     -24
	armadillo5x0_init                            392     364     -28
	mx31lilly_db_init                            248     208     -40
	mxc_board_init                              3760    3580    -180

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>