arm: Correct dependency for STATIC_MACH_TYPE

Kconfig should not display the STATIC_MACH_TYPE option when
SUPPORT_PASSING_ATAGS is not selected. For example, when using most
platforms with menuconfig, it shows the STATIC_MACH_TYPE option causing
confusion.  As we know, this should not occur when SUPPORT_PASSING_ATAGS
is not selected

[trini: Reword commit message]
Signed-off-by: Liya Huang <1425075683@qq.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 791e218..da6f117 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2202,6 +2202,7 @@
 config STATIC_MACH_TYPE
 	bool "Statically define the Machine ID number"
 	default y if TARGET_DS109 || TARGET_DS414 || DEFAULT_DEVICE_TREE = "sun7i-a20-icnova-swac"
+	depends on SUPPORT_PASSING_ATAGS
 	help
 	  When booting via ATAGs, enable this option if we know the correct
 	  machine ID number to use at compile time.  Some systems will be