arm: Remove zmx25 board and ARCH_MX25

This board has not been converted to CONFIG_DM by the deadline.
Remove it.  As this is the last ARCH_MX25 platform, remove those
references as well.

Cc: Matthias Weisser <weisserm@arcor.de>
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 06e6b22..03471db 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -44,7 +44,7 @@
 	[0] = GPIO1_BASE_ADDR,
 	[1] = GPIO2_BASE_ADDR,
 	[2] = GPIO3_BASE_ADDR,
-#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
+#if defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
 		defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
 		defined(CONFIG_MX7) || defined(CONFIG_IMX8M) || \
 		defined(CONFIG_ARCH_IMX8) || defined(CONFIG_IMXRT1050)
@@ -352,7 +352,7 @@
 	{ 0, (struct gpio_regs *)GPIO1_BASE_ADDR },
 	{ 1, (struct gpio_regs *)GPIO2_BASE_ADDR },
 	{ 2, (struct gpio_regs *)GPIO3_BASE_ADDR },
-#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
+#if defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
 		defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
 		defined(CONFIG_IMX8M) || defined(CONFIG_ARCH_IMX8)
 	{ 3, (struct gpio_regs *)GPIO4_BASE_ADDR },
@@ -376,7 +376,7 @@
 	{ "gpio_mxc", &mxc_plat[0] },
 	{ "gpio_mxc", &mxc_plat[1] },
 	{ "gpio_mxc", &mxc_plat[2] },
-#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
+#if defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
 		defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
 		defined(CONFIG_IMX8M) || defined(CONFIG_ARCH_IMX8)
 	{ "gpio_mxc", &mxc_plat[3] },