ARM: configs: stm32: Remove useless flags in STM32 defconfig

As stm32_defconfig is dedicated to STM32 MCUs, disable
CONFIG_COMMON_CLK_STM32MP flag which is only used by STM32 MPUs.

Disable CONFIG_SUSPEND, CONFIG_ADVISE_SYSCALLS, CONFIG_IO_URING
CONFIG_POSIX_TIMERS, CONFIG_GCC_PLUGINS, it will reduce the kernel
image size for these platforms which embed a low amount of memory.

Tested on STM32F746-DISCO board which embeds 8MB of memory.

Signed-off-by: Patrice Chotard <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: Patrice Chotard

arch/arm/configs/stm32_defconfig

@@ -6,12 +6,15 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_EXPERT=y
 # CONFIG_UID16 is not set
+# CONFIG_POSIX_TIMERS is not set
 CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set
 # CONFIG_EVENTFD is not set
 # CONFIG_AIO is not set
+# CONFIG_IO_URING is not set
+# CONFIG_ADVISE_SYSCALLS is not set
 # CONFIG_MMU is not set
 CONFIG_ARCH_STM32=y
 CONFIG_CPU_V7M_NUM_IRQ=240
@@ -20,6 +23,8 @@ CONFIG_DRAM_BASE=0x90000000
 # CONFIG_ATAGS is not set
 CONFIG_XIP_KERNEL=y
 CONFIG_XIP_PHYS_ADDR=0x08008000
+# CONFIG_SUSPEND is not set
+# CONFIG_GCC_PLUGINS is not set
 CONFIG_BINFMT_FLAT=y
 # CONFIG_COREDUMP is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
@@ -60,6 +65,7 @@ CONFIG_DMADEVICES=y
 CONFIG_STM32_DMA=y
 CONFIG_STM32_DMAMUX=y
 CONFIG_STM32_MDMA=y
+# CONFIG_COMMON_CLK_STM32MP is not set
 CONFIG_IIO=y
 CONFIG_STM32_ADC_CORE=y
 CONFIG_STM32_ADC=y