purism-librem5: re-enable PM for the Sparklan module (MR 3921)

According to Purism, PM on the Sparklan WiFi module works now with
recent kernels, the upstream bug referenced earlier (see diff) was
closed.

Note that this has no effect on the Redpine WiFi module, which is the
default module shipped with the L5.

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

device/main/device-purism-librem5/APKBUILD

@@ -4,7 +4,7 @@
 # Co-Maintainer: Newbyte <newbyte@postmarketos.org>
 pkgname=device-purism-librem5
 pkgdesc="Purism Librem 5 Phone"
-pkgver=1.41
+pkgver=1.42
 pkgrel=0
 _confver=56
 _purismrel=1
@@ -46,7 +46,6 @@ source="
 	l5-ship-mode.initd
 	l5-lockdown-support.initd
 	org.freedesktop.GeoClue2.service
-	brcmfmac-no-powersave.conf
 "
 subpackages="
 	$pkgname-camera
@@ -178,12 +177,6 @@ package() {
 	install -Dm755 "$srcdir"/l5-lockdown-support.initd \
 		"$pkgdir"/etc/init.d/l5-lockdown-support
 
-
-	# disable PM for brcmfmac wifi / Sparklan WLAN
-	# see: https://source.puri.sm/Librem5/linux/-/issues/404
-	install -D -m644 "$srcdir"/brcmfmac-no-powersave.conf \
-		-t "$pkgdir"/etc/NetworkManager/conf.d
-
 	devicepkg_package $startdir $pkgname
 }
 
@@ -212,5 +205,4 @@ b45749fcddfd65a302b502bcabfa5828d1b63e45d844fd50e44009a756b919db20fe9526102947c0
 c723764d507ccd4b04aa5ce79b1d1ebc131873cdc37a943cb0f92b8a08a3c69eb9e0d31fcd4589fd8c40a9676bae9897e4f12ec2ebe4db8214ac85669ef35a53  l5-ship-mode.initd
 f4b314d553655f7975445ac0a33099923e20dabb082c07e2cf6a78e4118c143d777dd4ad2c09cbc388600bdefe8deb3073fbd15b238772ddf09c66ac46415590  l5-lockdown-support.initd
 fd91bcd8cecd509587f0a26d454157a1df094d2d86c75329d1002e9474946494d4d1b5407e055fbd5f21e22394eeb1bbd4b3439ae6925db50a3427b4fac101cf  org.freedesktop.GeoClue2.service
-7e679cbd0970d017790e4217a027128a0c99c20a1b757cbce49d92eb0df9fa54148017313dc27bcd1029ab6c904f98c5c4032a1f5db7849401a55cb2e564add1  brcmfmac-no-powersave.conf
 "

device/main/device-purism-librem5/brcmfmac-no-powersave.conf

-[connection-wifi-brcmfmac]
-match-device=driver:brcmfmac
-# 2 = disable powersave
-wifi.powersave=2