partition: fix rootfs GUID in the RB1 partition conf file

As reported on qualcomm-linux/qcom-ptool#9,
the GUID used for rootfs is incorrectly. It was wrongly inherited from
the original partition XML file of an Android build, and the GUID
which was used corresponds to what Android uses for userdata
partition.

This changes sets the correct GUID
(b921b045-1df0-41c3-af44-4c6f280d3fae) for Root Partition (64-bit
ARM/AArch64).

Reported-by: Loic Minier <[email protected]>
Signed-off-by: Nicolas Dechesne <[email protected]>

Author: ndechesne

recipes-bsp/partition/files/qcm2290-partitions.conf

@@ -94,4 +94,4 @@
 --partition --name=fsg --size=2048KB --type-guid=638FF8E2-22C9-E33B-8F5D-0E81686A68CB
 --partition --name=fsc --size=128KB --type-guid=57B90A16-22C9-E33B-8F5D-0E81686A68CB
 --partition --name=efi --size=524288KB --type-guid=C12A7328-F81F-11D2-BA4B-00A0C93EC93B --filename=efi.bin
---partition --name=rootfs --size=9960572KB --type-guid=1B81E7E6-F50D-419B-A739-2AEEF8DA3335 --filename=rootfs.img
+--partition --name=rootfs --size=9960572KB --type-guid=B921B045-1DF0-41C3-AF44-4C6F280D3FAE --filename=rootfs.img