Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 8f8be5b..5c17cb7 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -118,7 +118,7 @@
 }
 
 static inline int nvmem_cell_write(struct nvmem_cell *cell,
-				    const char *buf, size_t len)
+				   void *buf, size_t len)
 {
 	return -EOPNOTSUPP;
 }