rcar_gen3: drivers: pfc: V3M: Drop forward declarations

There's no point in having forward declaration just before the function
itself, drop it. No functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I302cff2014bb6e513b6fb48fcf6df7ade684039e

drivers/staging/renesas/rcar/pfc/V3M/pfc_init_v3m.c

@@ -481,9 +481,6 @@
 #define RDMCHCRB_SLM_256	(0x00000080U)	/* once in 256 clock cycle */
 #define RDMDPBASE_SEL_EXT	(0x00000001U)	/* External memory use */
 
-static void pfc_reg_write(uint32_t addr, uint32_t data);
-static void StartRtDma0_Descriptor(void);
-
 static void pfc_reg_write(uint32_t addr, uint32_t data)
 {
 	mmio_write_32(PFC_PMMR, ~data);