ARM: davinci: add platform hook to fetch the SRAM pool

Adds sram_get_gen_pool() which allows platform code to get
the machine's SRAM gen_pool. The gen_pool may be passed in
platform data for driver genalloc use.
Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/include/mach/sram.h

@@ -24,4 +24,7 @@
 extern void *sram_alloc(size_t len, dma_addr_t *dma);
 extern void sram_free(void *addr, size_t len);
 
+/* Get the struct gen_pool * for use in platform data */
+extern struct gen_pool *sram_get_gen_pool(void);
+
 #endif /* __MACH_SRAM_H */

arch/arm/mach-davinci/sram.c

@@ -18,6 +18,11 @@
 
 static struct gen_pool *sram_pool;
 
+struct gen_pool *sram_get_gen_pool(void)
+{
+	return sram_pool;
+}
+
 void *sram_alloc(size_t len, dma_addr_t *dma)
 {
 	unsigned long vaddr;