pkg*: fix doxygen grouping

pkg/fatfs/fatfs_diskio/mtd/include/fatfs_diskio_mtd.h

@@ -7,7 +7,7 @@
  */
 
 /**
- * @ingroup     sys_fatfs_diskio
+ * @ingroup     pkg_fatfs
  * @brief
  * @{
  *

pkg/fatfs/fatfs_diskio/mtd/mtd_diskio.c

@@ -7,7 +7,7 @@
  */
 
 /**
- * @ingroup  sys_fatfs_diskio
+ * @ingroup  pkg_fatfs
  * @{
  *
  * @file

pkg/fatfs/fatfs_vfs/fatfs_vfs.c

@@ -7,7 +7,7 @@
  */
 
 /**
- * @ingroup     fs
+ * @ingroup     pkg_fatfs
  * @{
  *
  * @file

pkg/lwip/contrib/doc.txt

@@ -1,3 +1,3 @@
 /**
- * @defgroup lwip_contrib   RIOT lwIP port
+ * @defgroup pkg_lwip_contrib   RIOT lwIP port
  */

pkg/lwip/include/arch/cc.h

@@ -7,8 +7,8 @@
  */
 
 /**
- * @defgroup    lwip_arch_cc    Compiler and processor description
+ * @defgroup    pkg_lwip_arch_cc    Compiler and processor description
- * @ingroup     lwip
+ * @ingroup     pkg_lwip
  * @brief       Describes compiler and processor to lwIP
  * @{
  *

pkg/lwip/include/arch/sys_arch.h

@@ -7,8 +7,8 @@
  */
 
 /**
- * @defgroup    lwip_arch_sys_arch Architecture depentent definitions
+ * @defgroup    pkg_lwip_arch_sys_arch Architecture depentent definitions
- * @ingroup     lwip
+ * @ingroup     pkg_lwip
  * @brief       Semaphores and mailboxes.
  * @{
  *

pkg/lwip/include/lwipopts.h

@@ -7,8 +7,8 @@
  */
 
 /**
- * @defgroup    lwip_opts   lwIP options
+ * @defgroup    pkg_lwip_opts   lwIP options
- * @ingroup     lwip
+ * @ingroup     pkg_lwip
  * @brief       Options for the lwIP stack
  * @{
  *

pkg/lwip/include/sock_types.h

@@ -7,7 +7,7 @@
  */
 
 /**
- * @addtogroup pkg_lwip_sokc
+ * @ingroup pkg_lwip_sock
  * @{
  *
  * @file

pkg/spiffs/fs/spiffs_fs.c

@@ -7,7 +7,7 @@
  */
 
 /**
- * @ingroup     fs
+ * @ingroup     pkg_spiffs
  * @{
  *
  * @file