Kconfig: move CONFIG_SYS_CLK_FREQ to Kconfig

It makes sense to specify CONFIG_SYS_CLK_FREQ in "configs/xx_defconfig"
instead of "include/configs/xxx.h" because then header will be reusable
across boards with different CPU clocks.

Also this nice to have an ability for end user to tune this value
himself via "menuconfig".

For now I'm only applying this change to all ARC configs because
otherwise scope of change will be huge.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Tom Rini <trini@ti.com>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Hans de Goede <hdegoede@redhat.com>
cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>

Kconfig

@@ -143,6 +143,12 @@ config SYS_TEXT_BASE
 	help
 	  TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
 
+config SYS_CLK_FREQ
+	depends on ARC
+	int "CPU clock frequency"
+	help
+	  TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
+
 endmenu		# Boot images
 
 source "arch/Kconfig"

configs/arcangel4-be_defconfig

 CONFIG_ARC=y
 CONFIG_TARGET_ARCANGEL4_BE=y
+CONFIG_SYS_CLK_FREQ=70000000

configs/arcangel4_defconfig

 CONFIG_ARC=y
 CONFIG_TARGET_ARCANGEL4=y
+CONFIG_SYS_CLK_FREQ=70000000

configs/axs101_defconfig

 CONFIG_ARC=y
 CONFIG_TARGET_AXS101=y
+CONFIG_SYS_CLK_FREQ=750000000
\ No newline at end of file

configs/tb100_defconfig

 CONFIG_ARC=y
 CONFIG_TARGET_TB100=y
+CONFIG_SYS_CLK_FREQ=500000000
\ No newline at end of file

include/configs/arcangel4-be.h

@@ -14,7 +14,6 @@
 #define CONFIG_ARC700
 #define CONFIG_ARC_MMU_VER		3
 #define CONFIG_SYS_CACHELINE_SIZE	64
-#define CONFIG_SYS_CLK_FREQ		70000000
 #define CONFIG_SYS_TIMER_RATE		CONFIG_SYS_CLK_FREQ
 
 /*

include/configs/arcangel4.h

@@ -13,7 +13,6 @@
 #define CONFIG_ARC700
 #define CONFIG_ARC_MMU_VER		3
 #define CONFIG_SYS_CACHELINE_SIZE	64
-#define CONFIG_SYS_CLK_FREQ		70000000
 #define CONFIG_SYS_TIMER_RATE		CONFIG_SYS_CLK_FREQ
 
 /*

include/configs/axs101.h

@@ -13,7 +13,6 @@
 #define CONFIG_ARC700
 #define CONFIG_ARC_MMU_VER		3
 #define CONFIG_SYS_CACHELINE_SIZE	32
-#define CONFIG_SYS_CLK_FREQ		750000000
 #define CONFIG_SYS_TIMER_RATE		CONFIG_SYS_CLK_FREQ
 
 /* NAND controller DMA doesn't work correctly with D$ enabled */

include/configs/tb100.h

@@ -15,7 +15,6 @@
 #define CONFIG_ARC700
 #define CONFIG_ARC_MMU_VER		3
 #define CONFIG_SYS_CACHELINE_SIZE	32
-#define CONFIG_SYS_CLK_FREQ		500000000
 #define CONFIG_SYS_TIMER_RATE		CONFIG_SYS_CLK_FREQ
 
 /*