arm: imx6: tqma6: boot device selection via Kconfig

Signed-off-by: NMarkus Niebel <Markus.Niebel@tq-group.com>

board/tqc/tqma6/Kconfig

@@ -33,6 +33,25 @@ config TQMA6S
 
 endchoice
 
+choice
+	prompt "TQMa6 boot configuration"
+	default TQMA6X_MMC_BOOT
+	help
+	  Configure boot device. This is also used to implement environment
+	  location.
+
+config TQMA6X_MMC_BOOT
+	bool "MMC / SD Boot"
+	help
+	  Boot from eMMC / SD Card
+
+config TQMA6X_SPI_BOOT
+	bool "SPI NOR Boot"
+	help
+	  Boot from on board SPI NOR flash
+
+endchoice
+
 config IMX_CONFIG
 	default "board/tqc/tqma6/tqma6q.cfg" if TQMA6Q
 	default "board/tqc/tqma6/tqma6s.cfg" if TQMA6S

configs/tqma6q_mba6_mmc_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
 CONFIG_TARGET_TQMA6=y
-CONFIG_SYS_EXTRA_OPTIONS="MBA6,TQMA6X_MMC_BOOT"
+CONFIG_SYS_EXTRA_OPTIONS="MBA6"
 CONFIG_CMD_SETEXPR=y
 CONFIG_CMD_NET=y

configs/tqma6q_mba6_spi_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
 CONFIG_TARGET_TQMA6=y
-CONFIG_SYS_EXTRA_OPTIONS="MBA6,TQMA6X_SPI_BOOT"
+CONFIG_TQMA6X_SPI_BOOT=y
+CONFIG_SYS_EXTRA_OPTIONS="MBA6"
 CONFIG_CMD_SETEXPR=y
 CONFIG_CMD_NET=y

configs/tqma6s_mba6_mmc_defconfig

@@ -2,6 +2,6 @@ CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
 CONFIG_TARGET_TQMA6=y
 CONFIG_TQMA6S=y
-CONFIG_SYS_EXTRA_OPTIONS="MBA6,TQMA6X_MMC_BOOT"
+CONFIG_SYS_EXTRA_OPTIONS="MBA6"
 CONFIG_CMD_SETEXPR=y
 CONFIG_CMD_NET=y

configs/tqma6s_mba6_spi_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
 CONFIG_TARGET_TQMA6=y
 CONFIG_TQMA6S=y
-CONFIG_SYS_EXTRA_OPTIONS="MBA6,TQMA6X_SPI_BOOT"
+CONFIG_TQMA6X_SPI_BOOT=y
+CONFIG_SYS_EXTRA_OPTIONS="MBA6"
 CONFIG_CMD_SETEXPR=y
 CONFIG_CMD_NET=y