ARM: defconfig: Add IOSCHED_BFQ to the default configs

ARM systems are often memory constrained and more often than not
use slow single-channel storage such as flash memory or MMC/SD-cards.
For any interactive systems (such as mobile phones, tablets,
chromebooks...) the BFQ I/O scheduler will be desireable.

Make sure the BFQ I/O scheduler is available on these systems.

Loongarch, MIPS, m68k, UM and S390 has also enabled BFQ in their
defconfigs, cf commit b495dfed
"um: Cleanup CONFIG_IOSCHED_CFQ" where the motivation is that
it replaces the former CFQ scheduler.

Cc: Paolo Valente <paolo.valente@linaro.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230203140404.1125850-1-linus.walleij@linaro.orgSigned-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v5_defconfig

@@ -49,6 +49,7 @@ CONFIG_ARM_KIRKWOOD_CPUIDLE=y
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
+CONFIG_IOSCHED_BFQ=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y

arch/arm/configs/multi_v7_defconfig

@@ -146,6 +146,7 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_CMDLINE_PARTITION=y
+CONFIG_IOSCHED_BFQ=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y