samsung-xcover4lte: use sm-sparse-image-tool (MR 3222)

The option `deviceinfo_flash_sparse_samsung_format` seems to work
fine on the xcover4lte.

Setting `deviceinfo_flash_sparse_samsung_format` to `1` (and
`deviceinfo_flash_sparse="true"`) causes heimdall to no longer hang
while the rootfs is being flashed.

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

device/testing/device-samsung-xcover4lte/APKBUILD

@@ -1,8 +1,8 @@
 # Reference: <https://postmarketos.org/devicepkg>
 pkgname=device-samsung-xcover4lte
 pkgdesc="Samsung Galaxy Xcover 4"
-pkgver=0.1
-pkgrel=1
+pkgver=0.2
+pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
 arch="aarch64"
@@ -20,5 +20,5 @@ package() {
 }
 
 sha512sums="
-1ea0f245d741fc1cca3f65c2d7401f4ea3c3880c5a363843862efedf74baad70cce3ba2a7add22332c60f8cd8dc4029b3876c2392d802818ec51cb966d6ce99d  deviceinfo
+065b2f540e732340e065187f2584b77219114c82d366789b3dbeb83441c84db28668c678355fc2075c958a7ac252dbb73116b9492ba3accb986ee7461672292b  deviceinfo
 "

device/testing/device-samsung-xcover4lte/deviceinfo

@@ -28,5 +28,7 @@ deviceinfo_flash_offset_ramdisk="0x01000000"
 deviceinfo_flash_offset_second="0x00f00000"
 deviceinfo_flash_offset_tags="0x00000100"
 deviceinfo_flash_pagesize="2048"
+deviceinfo_flash_sparse="true"
+deviceinfo_flash_sparse_samsung_format="1"
 deviceinfo_flash_heimdall_partition_kernel="BOOT"
 deviceinfo_flash_heimdall_partition_system="SYSTEM"