bcm27xx: 6.1: turn on cpu erratum for A72 and disable A53

The original configuration might be copied from bcm2710 which uses
cortex A53 rather than A72 in BCM2711, without errata might be harmful
to system stability and security.

Signed-off-by: Yangyu Chen <[email protected]>

target/linux/bcm27xx/bcm2711/config-6.1

@@ -24,14 +24,8 @@ CONFIG_ARM64=y
 CONFIG_ARM64_4K_PAGES=y
 CONFIG_ARM64_CNP=y
 CONFIG_ARM64_EPAN=y
-CONFIG_ARM64_ERRATUM_819472=y
-CONFIG_ARM64_ERRATUM_824069=y
-CONFIG_ARM64_ERRATUM_826319=y
-CONFIG_ARM64_ERRATUM_827319=y
-CONFIG_ARM64_ERRATUM_832075=y
-CONFIG_ARM64_ERRATUM_843419=y
+CONFIG_ARM64_ERRATUM_1319367=y
 CONFIG_ARM64_HW_AFDBM=y
-CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843419=y
 CONFIG_ARM64_PAGE_SHIFT=12
 CONFIG_ARM64_PAN=y
 CONFIG_ARM64_PA_BITS=48