lib/mpi: use "static inline" instead of "extern inline"

When we use CONFIG_PROFILE_ALL_BRANCHES, every 'if()' introduces
a static variable, but that is not allowed in 'extern inline'
functions:

mpi-inline.h:116:204: warning: '______f' is static but declared in inline function 'mpihelp_sub' which is not static
mpi-inline.h:113:184: warning: '______f' is static but declared in inline function 'mpihelp_sub' which is not static
mpi-inline.h:70:184: warning: '______f' is static but declared in inline function 'mpihelp_add' which is not static
mpi-inline.h:56:204: warning: '______f' is static but declared in inline function 'mpihelp_add_1' which is not static

This changes the MPI code to use 'static inline' instead, to get
rid of hundreds of warnings.

Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

lib/mpi/mpi-inline.h

···
 #define G10_MPI_INLINE_H
 
 #ifndef G10_MPI_INLINE_DECL
-#define G10_MPI_INLINE_DECL  extern inline
+#define G10_MPI_INLINE_DECL  static inline
 #endif
 
 G10_MPI_INLINE_DECL mpi_limb_t

lib/mpi/mpi-internal.h

···
 int mpi_lshift_limbs(MPI a, unsigned int count);
 
 /*-- mpihelp-add.c --*/
-mpi_limb_t mpihelp_add_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
+static inline mpi_limb_t mpihelp_add_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
 			 mpi_size_t s1_size, mpi_limb_t s2_limb);
 mpi_limb_t mpihelp_add_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
 			 mpi_ptr_t s2_ptr, mpi_size_t size);
-mpi_limb_t mpihelp_add(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
+static inline mpi_limb_t mpihelp_add(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
 		       mpi_ptr_t s2_ptr, mpi_size_t s2_size);
 
 /*-- mpihelp-sub.c --*/
-mpi_limb_t mpihelp_sub_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
+static inline mpi_limb_t mpihelp_sub_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
 			 mpi_size_t s1_size, mpi_limb_t s2_limb);
 mpi_limb_t mpihelp_sub_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
 			 mpi_ptr_t s2_ptr, mpi_size_t size);
-mpi_limb_t mpihelp_sub(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
+static inline mpi_limb_t mpihelp_sub(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
 		       mpi_ptr_t s2_ptr, mpi_size_t s2_size);
 
 /*-- mpihelp-cmp.c --*/