UBUNTU: [Config] update configs and annotations after rebase to 6.0-rc5

In particular drop CONFIG_ARM64_BTI_KERNEL that is not supported anymore
if the kernel is built with gcc, see:

 c0a454b904 ("arm64/bti: Disable in kernel BTI when cross section thunks are broken")

Signed-off-by: Andrea Righi <andrea.righi@canonical.com>

debian.master/config/annotations

@@ -13479,7 +13479,6 @@ CONFIG_ARM64_TLB_RANGE                          policy<{'arm64': 'y'}>
 
 # Menu: Processor type and features >> ARMv8.5 architectural features >> Architecture: arm64
 CONFIG_ARM64_BTI                                policy<{'arm64': 'y'}>
-CONFIG_ARM64_BTI_KERNEL                         policy<{'arm64': 'y'}>
 CONFIG_ARM64_E0PD                               policy<{'arm64': 'y'}>
 CONFIG_ARM64_MTE                                policy<{'arm64': 'y'}>
 

debian.master/config/config.common.ubuntu

@@ -673,7 +673,6 @@ CONFIG_ARM64_ACPI_PARKING_PROTOCOL=y
 CONFIG_ARM64_AMU_EXTN=y
 CONFIG_ARM64_AS_HAS_MTE=y
 CONFIG_ARM64_BTI=y
-CONFIG_ARM64_BTI_KERNEL=y
 CONFIG_ARM64_CNP=y
 CONFIG_ARM64_CRYPTO=y
 # CONFIG_ARM64_DEBUG_PRIORITY_MASKING is not set
@@ -11169,6 +11168,7 @@ CONFIG_SOC_TEGRA_POWERGATE_BPMP=y
 CONFIG_SOC_TI81XX=y
 CONFIG_SOC_VF610=y
 CONFIG_SOC_VIRT=y
+CONFIG_SOFTIRQ_ON_OWN_STACK=y
 CONFIG_SOFTLOCKUP_DETECTOR=y
 CONFIG_SOFT_WATCHDOG=m
 CONFIG_SOFT_WATCHDOG_PRETIMEOUT=y