mvebu: activate more workarounds for ARM erratas

The Armada XP uses a Marvell PJ4Bv7 Processor for which already one
workaround for an errata is activated.
The Armada 285 uses a Cortex A9 r4p1 for which the Linux kernel provides
a workaround for ERRATA_764369, activate this.

Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/mvebu/config-4.14

@@ -45,6 +45,7 @@ CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_ARM_CPU_SUSPEND=y
 CONFIG_ARM_CRYPTO=y
 CONFIG_ARM_ERRATA_720789=y
+CONFIG_ARM_ERRATA_764369=y
 CONFIG_ARM_GIC=y
 CONFIG_ARM_GLOBAL_TIMER=y
 CONFIG_ARM_HAS_SG_CHAIN=y

target/linux/mvebu/config-4.9

@@ -38,6 +38,7 @@ CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_ARM_CPU_SUSPEND=y
 CONFIG_ARM_CRYPTO=y
 CONFIG_ARM_ERRATA_720789=y
+CONFIG_ARM_ERRATA_764369=y
 CONFIG_ARM_GIC=y
 CONFIG_ARM_HAS_SG_CHAIN=y
 CONFIG_ARM_HEAVY_MB=y