arch/arm: cortex-m7 may have a FPv5 FPU

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

arch/Config.in.arm

@@ -272,6 +272,7 @@ config BR2_cortex_m4
 config BR2_cortex_m7
 	bool "cortex-M7"
 	select BR2_ARM_CPU_HAS_THUMB2
+	select BR2_ARM_CPU_MAYBE_HAS_FPV5
 	select BR2_ARM_CPU_ARMV7M
 	select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
 endif # !BR2_ARCH_IS_64