arch/Config.in.x86: add broadwell Intel CPU variant

It was added in gcc 4.9.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

arch/Config.in.x86

@@ -247,6 +247,18 @@ config BR2_x86_haswell
 	select BR2_X86_CPU_HAS_AVX
 	select BR2_X86_CPU_HAS_AVX2
 	select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
+config BR2_x86_broadwell
+	bool "broadwell"
+	select BR2_X86_CPU_HAS_MMX
+	select BR2_X86_CPU_HAS_SSE
+	select BR2_X86_CPU_HAS_SSE2
+	select BR2_X86_CPU_HAS_SSE3
+	select BR2_X86_CPU_HAS_SSSE3
+	select BR2_X86_CPU_HAS_SSE4
+	select BR2_X86_CPU_HAS_SSE42
+	select BR2_X86_CPU_HAS_AVX
+	select BR2_X86_CPU_HAS_AVX2
+	select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
 config BR2_x86_atom
 	bool "atom"
 	select BR2_X86_CPU_HAS_MMX
@@ -401,6 +413,7 @@ config BR2_GCC_TARGET_ARCH
 	default "sandybridge"	if BR2_x86_sandybridge
 	default "core-avx2"	if BR2_x86_core_avx2
 	default "haswell"	if BR2_x86_haswell
+	default "broadwell"	if BR2_x86_broadwell
 	default "atom"		if BR2_x86_atom
 	default "bonnel"	if BR2_x86_bonnel
 	default "westmere"	if BR2_x86_westmere