ARM: defconfig: turn off CONFIG_EXPERT

Since multi_v7_defconfig is meant to be the generic defconfig, many
users are not going to be experts and it is counterintuitive to have
CONFIG_EXPERT enabled.

This change has a couple of side-effects:

 - CONFIG_NAMESPACES is enabled by default. This adds about 0.2% of
  .text, but is already enabled in many board specific configs, and
   apparently a requirement for systemd, so this seems like a useful
   change.

 - CONFIG_DEBUG_MEMORY_INIT is enabled now, adding a tiny bit
   of code in the inittext section

 - CONFIG_RFKILL, CONFIG_MEDIA_SUPPORT_FILTER and various CONFIG_HID
   driver defaults change, so these have to be listed explicitly to
   maintain the previous behavior

 - CONFIG_SERIAL_SH_SCI_NR_UARTS=20 changes to the default value
   of 18, which I understand to be sufficient for any buard, even
   if all UARTS are enabled at the same time

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20260112153255.795553-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: arndb

arch/arm/configs/multi_v7_defconfig

@@ -3,7 +3,6 @@ CONFIG_NO_HZ_IDLE=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_CGROUPS=y
 CONFIG_BLK_DEV_INITRD=y
-CONFIG_EXPERT=y
 CONFIG_PERF_EVENTS=y
 CONFIG_KEXEC=y
 CONFIG_ARCH_VIRT=y
@@ -163,7 +162,6 @@ CONFIG_BT_QCOMSMD=m
 CONFIG_CFG80211=m
 CONFIG_MAC80211=m
 CONFIG_RFKILL=y
-CONFIG_RFKILL_INPUT=y
 CONFIG_RFKILL_GPIO=y
 CONFIG_NFC=m
 CONFIG_NFC_DIGITAL=m
@@ -376,7 +374,6 @@ CONFIG_SERIAL_TEGRA=y
 CONFIG_SERIAL_IMX=y
 CONFIG_SERIAL_IMX_CONSOLE=y
 CONFIG_SERIAL_SH_SCI=y
-CONFIG_SERIAL_SH_SCI_NR_UARTS=20
 CONFIG_SERIAL_MSM=y
 CONFIG_SERIAL_MSM_CONSOLE=y
 CONFIG_SERIAL_VT8500=y
@@ -676,6 +673,7 @@ CONFIG_REGULATOR_WM8994=m
 CONFIG_CEC_SAMSUNG_S5P=m
 CONFIG_CEC_STM32=m
 CONFIG_MEDIA_SUPPORT=m
+# CONFIG_MEDIA_SUPPORT_FILTER is not set
 CONFIG_MEDIA_USB_SUPPORT=y
 CONFIG_USB_VIDEO_CLASS=m
 CONFIG_V4L_PLATFORM_DRIVERS=y
@@ -859,6 +857,18 @@ CONFIG_SND_SOC_WM8960=m
 CONFIG_SND_SOC_WM8962=m
 CONFIG_SND_SOC_WM8978=m
 CONFIG_SND_AUDIO_GRAPH_CARD=m
+# CONFIG_HID_A4TECH is not set
+# CONFIG_HID_APPLE is not set
+# CONFIG_HID_BELKIN is not set
+# CONFIG_HID_CHERRY is not set
+# CONFIG_HID_CHICONY is not set
+# CONFIG_HID_CYPRESS is not set
+# CONFIG_HID_EZKEY is not set
+# CONFIG_HID_ITE is not set
+# CONFIG_HID_KENSINGTON is not set
+# CONFIG_HID_REDRAGON is not set
+# CONFIG_HID_MICROSOFT is not set
+# CONFIG_HID_MONTEREY is not set
 CONFIG_USB=y
 CONFIG_USB_OTG=y
 CONFIG_USB_XHCI_HCD=y