kernel: Bump to 4.4.44

kernel: config: More USB config options for bcm2709_defconfig
See: raspberrypi/linux#1805

kernel: config: Add CONFIG_MD_M25P80 and CONFIG_MD_SPI_NOR
See: raspberrypi/linux#1781

kernel: BCM270X_DT: Enable UART0 on CM3

kernel: BCM270X_DT: Add spi0-cs overlay

kernel: Revert bcm2835-i2s: Changes for allowing asymmetric sample formats
See: raspberrypi/linux#1783

Author: popcornmix

boot/bcm2710-rpi-cm3.dtb

@@ -1131,7 +1131,7 @@ Params: <None>
 
 
 Name:   spi-gpio35-39
-Info:   move SPI function block to GPIO 35 to 39
+Info:   Move SPI function block to GPIO 35 to 39
 Load:   dtoverlay=spi-gpio35-39
 Params: <None>
 
@@ -1142,6 +1142,13 @@ Load:   dtoverlay=spi-rtc,<param>=<val>
 Params: pcf2123                 Select the PCF2123 device
 
 
+Name:   spi0-cs
+Info:   Allows the (software) CS pins for SPI0 to be changed
+Load:   dtoverlay=spi0-cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 8)
+        cs1_pin                 GPIO pin for CS1 (default 7)
+
+
 Name:   spi0-hw-cs
 Info:   Re-enables hardware CS/CE (chip selects) for SPI0
 Load:   dtoverlay=spi0-hw-cs

boot/kernel.img

@@ -7893,6 +7893,7 @@
 0xc18578ed	process_srcu	vmlinux	EXPORT_SYMBOL_GPL
 0x26a7939c	sdio_writel	vmlinux	EXPORT_SYMBOL_GPL
 0xe1d06bb8	nfs_pageio_reset_write_mds	vmlinux	EXPORT_SYMBOL_GPL
+0xda2053b6	ocfs2_is_o2cb_active	fs/ocfs2/ocfs2_stackglue	EXPORT_SYMBOL_GPL
 0x0edfd036	__drm_atomic_helper_plane_duplicate_state	drivers/gpu/drm/drm_kms_helper	EXPORT_SYMBOL
 0x7730f22d	drbd_conn_str	drivers/block/drbd/drbd	EXPORT_SYMBOL
 0x607923de	inet_del_offload	vmlinux	EXPORT_SYMBOL
@@ -8170,6 +8171,7 @@
 0x66642f44	gen_pool_add_virt	vmlinux	EXPORT_SYMBOL
 0x1d961d5b	finish_no_open	vmlinux	EXPORT_SYMBOL
 0x9908a52a	register_netdevice	vmlinux	EXPORT_SYMBOL
+0x0d059e64	static_key_deferred_flush	vmlinux	EXPORT_SYMBOL_GPL
 0x84d96091	blkdev_put	vmlinux	EXPORT_SYMBOL
 0xd0c0621a	user_describe	vmlinux	EXPORT_SYMBOL_GPL
 0x1108bddd	blkdev_get	vmlinux	EXPORT_SYMBOL
@@ -9466,6 +9468,7 @@
 0x86a4889a	kmalloc_order_trace	vmlinux	EXPORT_SYMBOL
 0x5cfacf1d	snd_ctl_find_numid	sound/core/snd	EXPORT_SYMBOL
 0xf1e98bed	nat_callforwarding_hook	net/netfilter/nf_conntrack_h323	EXPORT_SYMBOL_GPL
+0xe82f0d8a	spi_nor_scan	drivers/mtd/spi-nor/spi-nor	EXPORT_SYMBOL_GPL
 0x3767a93c	dm_bio_detain	drivers/md/dm-bio-prison	EXPORT_SYMBOL_GPL
 0x38a4f7ae	drm_format_num_planes	drivers/gpu/drm/drm	EXPORT_SYMBOL
 0xe4d5c4a8	devm_backlight_device_register	vmlinux	EXPORT_SYMBOL