arm/edk2-firmware: Fix branch name variables

In the SRC_URI, the branch name variables are switched for edk2 and
edk2-platforms.  Switch them as appropriate.

Fixes: bf204866e864 ("arm: Use SRC* variables consistently")
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm/recipes-bsp/uefi/edk2-firmware.inc

@@ -18,8 +18,8 @@ SRC_URI_EDK2_PLATFORMS ?= "git://github.com/tianocore/edk2-platforms.git;protoco
 SRCBRANCH_edk2 = "master"
 SRCBRANCH_edk2_platforms = "master"
 SRC_URI = "\
-    ${SRC_URI_EDK2};branch=${SRCBRANCH_edk2_platforms};name=edk2;destsuffix=edk2 \
-    ${SRC_URI_EDK2_PLATFORMS};branch=${SRCBRANCH_edk2};name=edk2-platforms;destsuffix=edk2/edk2-platforms \
+    ${SRC_URI_EDK2};branch=${SRCBRANCH_edk2};name=edk2;destsuffix=edk2 \
+    ${SRC_URI_EDK2_PLATFORMS};branch=${SRCBRANCH_edk2_platforms};name=edk2-platforms;destsuffix=edk2/edk2-platforms \
 "
 
 SRCREV_FORMAT         = "edk2_edk2-platforms"