nvmem: Add macro to register nvmem layout drivers

Provide a module_nvmem_layout_driver() macro at the end of the
nvmem-provider.h header to reduce the boilerplate when registering nvmem
layout drivers.
Suggested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230404172148.82422-37-srinivas.kandagatla@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/nvmem-provider.h

@@ -9,6 +9,7 @@
 #ifndef _LINUX_NVMEM_PROVIDER_H
 #define _LINUX_NVMEM_PROVIDER_H
 
+#include <linux/device/driver.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/gpio/consumer.h>
@@ -242,4 +243,9 @@ nvmem_layout_get_match_data(struct nvmem_device *nvmem,
 }
 
 #endif /* CONFIG_NVMEM */
+
+#define module_nvmem_layout_driver(__layout_driver)		\
+	module_driver(__layout_driver, nvmem_layout_register,	\
+		      nvmem_layout_unregister)
+
 #endif  /* ifndef _LINUX_NVMEM_PROVIDER_H */