Convert CONFIG_SYS_BOOT_GET_{CMDLINE, KBD} to Kconfig

This converts the following to Kconfig:
	CONFIG_SYS_BOOT_GET_CMDLINE
	CONFIG_SYS_BOOT_GET_KBD

Signed-off-by: Derald D. Woods <woods.technical@gmail.com>
diff --git a/arch/Kconfig b/arch/Kconfig
index 762230c..5d57d6d 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -26,6 +26,8 @@
 config M68K
 	bool "M68000 architecture"
 	select HAVE_PRIVATE_LIBGCC
+	select SYS_BOOT_GET_CMDLINE
+	select SYS_BOOT_GET_KBD
 
 config MICROBLAZE
 	bool "MicroBlaze architecture"
@@ -53,6 +55,8 @@
 	bool "PowerPC architecture"
 	select HAVE_PRIVATE_LIBGCC
 	select SUPPORT_OF_CONTROL
+	select SYS_BOOT_GET_CMDLINE
+	select SYS_BOOT_GET_KBD
 
 config RISCV
 	bool "riscv architecture"
diff --git a/arch/m68k/include/asm/config.h b/arch/m68k/include/asm/config.h
index 9c4d3fb..fd0b551 100644
--- a/arch/m68k/include/asm/config.h
+++ b/arch/m68k/include/asm/config.h
@@ -11,7 +11,5 @@
 
 #define CONFIG_LMB
 #define CONFIG_SYS_BOOT_RAMDISK_HIGH
-#define CONFIG_SYS_BOOT_GET_CMDLINE
-#define CONFIG_SYS_BOOT_GET_KBD
 
 #endif
diff --git a/arch/powerpc/include/asm/config.h b/arch/powerpc/include/asm/config.h
index 6aec815..67e4b48 100644
--- a/arch/powerpc/include/asm/config.h
+++ b/arch/powerpc/include/asm/config.h
@@ -31,8 +31,6 @@
 
 #define CONFIG_LMB
 #define CONFIG_SYS_BOOT_RAMDISK_HIGH
-#define CONFIG_SYS_BOOT_GET_CMDLINE
-#define CONFIG_SYS_BOOT_GET_KBD
 
 #ifndef CONFIG_MAX_MEM_MAPPED
 #if	defined(CONFIG_E500)		|| \