linux-nokia-n900: upgrade to lts 5.15.81 (MR 3692)

- Upgrade to linux 5.15.81
- Remove SPI driver for accelerometer to stop unnecessary dmesg output

[ci:skip-build]: already built successfully in CI

device/community/linux-nokia-n900/APKBUILD

@@ -2,8 +2,8 @@
 # Co-Maintainer: Danct12 <danct12@disroot.org>
 
 pkgname=linux-nokia-n900
-pkgver=5.15.74
-pkgrel=2
+pkgver=5.15.81
+pkgrel=0
 pkgdesc="Mainline kernel fork for Nokia N900"
 arch="armv7"
 url="https://kernel.org/"
@@ -65,8 +65,8 @@ package() {
 
 sha512sums="
 d25ad40b5bcd6a4c6042fd0fd84e196e7a58024734c3e9a484fd0d5d54a0c1d87db8a3c784eff55e43b6f021709dc685eb0efa18d2aec327e4f88a79f405705a  linux-5.15.tar.xz
-c48120c5067003deb6b6ee057a1e6a3b635e2c1ff72435ced83d894d1b4ee03ca792d72777185db94e844e7fb5a4a49a98e6c906eb2cfaef87b96b7c8de5f622  linux-5.15.74.patch.xz
-ad905d3cec379353ccde68392ac1a945ba2a8687895363cecde014bc785142de0eda53fc22f3b346f4fb7bc30ac9c914b3923fe9d71223b96fa76fec77c560f0  config-nokia-n900.armv7
+022a3c82eb31596f9dde69a4c71721284f4129c5efd95fcef0c102ae4f53a70487e3c1ce44d92197510e98fcb0884398fc5b866938f93e542b2b010a592c5c75  linux-5.15.81.patch.xz
+7fbbed5b6488cea6518c91147ae32c56bb113ff83c415d0564d5f442ccfaa7bd847a15351983b4d68c44a9fca764e34e6c3681086069d7cf6da467df6a4fce98  config-nokia-n900.armv7
 04a39253afd25a7de03dc45ff322161672005406543c44b97d2dc293f202de7de446aee9707a690a290641c55c7bed6e78bbe096ca323dd7d88d3207427c8d31  0001-ARM-dts-n900-increase-charge-current-limit-to-950mA.patch
 3cc2036ba264bd855358361aacb309ad1cf1660cb82a0978523508d1b3fe513676c58f6efc5bb64f7601b77392c19d2c609b6d83541db7e418c1737cff3973e8  0002-power-supply-bq27xxx-expose-battery-data-when-CI.patch
 991237276bee4ff7bca24cf3a26afe3f12a2a604452793ad905a605890f761ac98374b5509cfbcab33c7b7ccf3da5cc286e70afe27b8e201387f403bf5025ae9  0003-wip-Revert-dma-direct-Fix-potential-NULL-pointer-der.patch

device/community/linux-nokia-n900/config-nokia-n900.armv7

@@ -4852,7 +4852,7 @@ CONFIG_IIO_SW_TRIGGER=m
 # CONFIG_FXLS8962AF_SPI is not set
 CONFIG_IIO_ST_ACCEL_3AXIS=m
 CONFIG_IIO_ST_ACCEL_I2C_3AXIS=m
-CONFIG_IIO_ST_ACCEL_SPI_3AXIS=m
+# CONFIG_IIO_ST_ACCEL_SPI_3AXIS is not set
 # CONFIG_KXSD9 is not set
 # CONFIG_KXCJK1013 is not set
 # CONFIG_MC3230 is not set