Fuel gauge RT9426a driver kernel5.15 compatible

FG RT9426A kernel5.15 driver
Compatible.

Change-Id: I52977d324ed28e6f7decf019eab9332cc14a309c
Signed-off-by: xuwei9 <xuwei9@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2675047
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key

drivers/power/rt9426a_fg_mmi/Android.mk

@@ -5,4 +5,5 @@ include $(CLEAR_VARS)
 LOCAL_MODULE := rt9426a_fg_mmi.ko
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_PATH := $(KERNEL_MODULES_OUT)
+KBUILD_OPTIONS += MODULE_KERNEL_VERSION=$(TARGET_KERNEL_VERSION)
 include $(DLKM_DIR)/AndroidKernelModule.mk

drivers/power/rt9426a_fg_mmi/Makefile

@@ -1,3 +1,22 @@
+ifeq ($(strip $(MODULE_KERNEL_VERSION)), 5.15)
+
+all: modules
+
+modules:
+	$(MAKE) -C $(KERNEL_SRC) M=$(M) modules $(KBUILD_OPTIONS)
+
+modules_install:
+	$(MAKE) INSTALL_MOD_STRIP=1 -C $(KERNEL_SRC) M=$(M) modules_install
+
+%:
+	$(MAKE) -C $(KERNEL_SRC) M=$(M) $@ $(KBUILD_OPTIONS)
+
+clean:
+	rm -f *.o *.ko *.mod.c *.mod.o *~ .*.cmd Module.symvers
+	rm -rf .tmp_versions
+
+else
+
 KERNEL_SRC ?= /lib/modules/$(shell uname -r)/build
 
 all:
@@ -9,3 +28,4 @@ modules_install:
 clean:
 	$(MAKE) -C $(KERNEL_SRC) M=$(PWD) clean
 
+endif