x86: kconfig: Imply HAVE_INTEL_ME in the platform Kconfig

Intel Management Engine is required by the platform, however it's
not a must have when building a U-Boot image. For example, during
development normally programming ME firmware is a one-time effort.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/baytrail/Kconfig b/arch/x86/cpu/baytrail/Kconfig
index 4e7d4a4..216d7d7 100644
--- a/arch/x86/cpu/baytrail/Kconfig
+++ b/arch/x86/cpu/baytrail/Kconfig
@@ -8,6 +8,7 @@
 	bool
 	select HAVE_FSP if !EFI
 	imply ENV_IS_IN_SPI_FLASH
+	imply HAVE_INTEL_ME if !EFI
 
 if INTEL_BAYTRAIL
 config INTERNAL_UART
diff --git a/arch/x86/cpu/broadwell/Kconfig b/arch/x86/cpu/broadwell/Kconfig
index 1ce3848..8501949 100644
--- a/arch/x86/cpu/broadwell/Kconfig
+++ b/arch/x86/cpu/broadwell/Kconfig
@@ -6,6 +6,7 @@
 config INTEL_BROADWELL
 	bool
 	select CACHE_MRC_BIN
+	imply HAVE_INTEL_ME
 
 if INTEL_BROADWELL
 
diff --git a/arch/x86/cpu/ivybridge/Kconfig b/arch/x86/cpu/ivybridge/Kconfig
index e23d01a..ed6b834 100644
--- a/arch/x86/cpu/ivybridge/Kconfig
+++ b/arch/x86/cpu/ivybridge/Kconfig
@@ -8,6 +8,7 @@
 config NORTHBRIDGE_INTEL_IVYBRIDGE
 	bool
 	select CACHE_MRC_BIN if HAVE_MRC
+	imply HAVE_INTEL_ME
 
 if NORTHBRIDGE_INTEL_IVYBRIDGE