ANDROID: GKI: Source GKI_BUILD_CONFIG_FRAGMENT after setting all variables

build.config.gki sources a GKI_BUILD_CONFIG_FRAGMENT before all of
the variables that are considered as part of a GKI kernel build are
declared. This reduces the effectiveness of a
GKI_BUILD_CONFIG_FRAGMENT, as it is only able to modify a subset of
the build variables.

Thus, move the logic to source GKI_BUILD_CONFIG_FRAGMENT to the end
of the GKI build config files to provide more flexibility for a
GKI_BUILD_CONFIG_FRAGMENT.

Bug: 262930113
Change-Id: I74abb45f9043acce04cb0052f54fded4340a9366
[isaacmanjarres: Modified build.config.gki.riscv64, which did not
exist on android13-5.15.]
Signed-off-by: Isaac J. Manjarres <isaacmanjarres@google.com>
(cherry picked from commit 69fefbb3db)

build.config.gki

@@ -1,6 +1,2 @@
 DEFCONFIG=gki_defconfig
 POST_DEFCONFIG_CMDS="check_defconfig"
-
-if [ -n "${GKI_BUILD_CONFIG_FRAGMENT}" ]; then
-source ${GKI_BUILD_CONFIG_FRAGMENT}
-fi

build.config.gki.aarch64

@@ -21,3 +21,7 @@ BUILD_GKI_ARTIFACTS=1
 BUILD_GKI_BOOT_IMG_SIZE=67108864
 BUILD_GKI_BOOT_IMG_GZ_SIZE=47185920
 BUILD_GKI_BOOT_IMG_LZ4_SIZE=53477376
+
+if [ -n "${GKI_BUILD_CONFIG_FRAGMENT}" ]; then
+source ${GKI_BUILD_CONFIG_FRAGMENT}
+fi

build.config.gki.riscv64

@@ -24,3 +24,7 @@ BUILD_GKI_BOOT_IMG_LZ4_SIZE=53477376
 
 PRE_DEFCONFIG_CMDS="mkdir -p \${OUT_DIR}/arch/riscv/configs/ && cat ${ROOT_DIR}/${KERNEL_DIR}/arch/riscv/configs/gki_defconfig ${ROOT_DIR}/${KERNEL_DIR}/arch/riscv/configs/64-bit.config ${ROOT_DIR}/${KERNEL_DIR}/arch/riscv/configs/gki.config > \${OUT_DIR}/arch/riscv/configs/${DEFCONFIG};"
 POST_DEFCONFIG_CMDS=""
+
+if [ -n "${GKI_BUILD_CONFIG_FRAGMENT}" ]; then
+source ${GKI_BUILD_CONFIG_FRAGMENT}
+fi

build.config.gki.x86_64

@@ -9,3 +9,7 @@ BUILD_GKI_CERTIFICATION_TOOLS=1
 
 BUILD_GKI_ARTIFACTS=1
 BUILD_GKI_BOOT_IMG_SIZE=67108864
+
+if [ -n "${GKI_BUILD_CONFIG_FRAGMENT}" ]; then
+source ${GKI_BUILD_CONFIG_FRAGMENT}
+fi