config: android-recommended: enable CONFIG_ARM64_SW_TTBR0_PAN

Enable PAN emulation using TTBR0_EL1 switching.

Reviewed-at: https://android-review.googlesource.com/#/c/325997/Signed-off-by: NSami Tolvanen <samitolvanen@google.com>
[AmitP: cherry-picked this change from Android common kernel
        and updated the commit message]
Signed-off-by: NAmit Pundir <amit.pundir@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

kernel/configs/android-recommended.config

@@ -6,6 +6,7 @@
 # CONFIG_NF_CONNTRACK_SIP is not set
 # CONFIG_PM_WAKELOCKS_GC is not set
 # CONFIG_VT is not set
+CONFIG_ARM64_SW_TTBR0_PAN=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 CONFIG_BLK_DEV_DM=y
 CONFIG_BLK_DEV_LOOP=y