c6x: platforms: cache: Export symbol L1P_cache_block_invalidate and L1D_cache_block_writeback

They are needed by other modules, the related error with allmodconfig:

MODPOST 3327 modules
ERROR: "L1P_cache_block_invalidate" [drivers/misc/lkdtm.ko] undefined!
ERROR: "L1D_cache_block_writeback" [drivers/misc/lkdtm.ko] undefined!

Signed-off-by: Chen Gang <[e-mail]>
Signed-off-by: Mark Salter <[e-mail]>

arch/c6x/platforms/cache.c

···
 			      (unsigned int *) end,
 			      IMCR_L1PIBAR, IMCR_L1PIWC);
 }
+EXPORT_SYMBOL(L1P_cache_block_invalidate);
 
 void L1D_cache_block_invalidate(unsigned int start, unsigned int end)
 {
···
 			      (unsigned int *) end,
 			      IMCR_L1DWBAR, IMCR_L1DWWC);
 }
+EXPORT_SYMBOL(L1D_cache_block_writeback);
 
 /*
  *  L2 block operations