imx: move get_boot_device to common file
i.MX8MN/P/ULP supports ROM API, they have almost same get_boot_device
implementation, so move to a common file. And when support i.MX9,
no need to include the other function copy.
Since sys_proto.h is included in imx_romapi.c, there will be build
warning for i.MX8M because wdog_regs not defined, so include imx-regs.h
in i.MX8M sys_proro.h
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 3cbcb15..fb46363 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -242,5 +242,6 @@
obj-$(CONFIG_ARCH_IMX8) += imx8/
obj-$(CONFIG_ARCH_IMXRT) += imxrt/
+obj-$(CONFIG_IMX8MN)$(CONFIG_IMX8MP)$(CONFIG_IMX8ULP) += imx_romapi.o
obj-$(CONFIG_SPL_BOOTROM_SUPPORT) += spl_imx_romapi.o
obj-$(CONFIG_IMX8_ROMAPI) += romapi.o