Revert "nvmem: core: Fix msb clearing bits"

Revert to reduce upstream merge conflicts.

This reverts commit f54b298454.

Change-Id: Ic3ea0d784e2fd8beaa339561b0bed3d457eee047

drivers/nvmem/core.c

@@ -900,7 +900,6 @@ static void nvmem_shift_read_buffer_in_place(struct nvmem_cell *cell, void *buf)
 		*p-- = 0;
 
 	/* clear msb bits if any leftover in the last byte */
-	if (cell->nbits%BITS_PER_BYTE)
 	*p &= GENMASK((cell->nbits%BITS_PER_BYTE) - 1, 0);
 }