brcm2708: rename all patches from raspberrypi git tree to use 950 prefix

Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support

Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>

1 files changed, 26 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch b/target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch
new file mode 100644
index 0000000..5f5bd83
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch
@@ -0,0 +1,26 @@
+From 0badcb291f4fb5c3477c37b4ad4a0e27dd863272 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 4 Dec 2015 17:41:50 +0000
+Subject: [PATCH] irq-bcm2836: Prevent spurious interrupts, and trap them early
+
+The old arch-specific IRQ macros included a dsb to ensure the
+write to clear the mailbox interrupt completed before returning
+from the interrupt. The BCM2836 irqchip driver needs the same
+precaution to avoid spurious interrupts.
+
+Spurious interrupts are still possible for other reasons,
+though, so trap them early.
+---
+ drivers/irqchip/irq-bcm2836.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/irqchip/irq-bcm2836.c
++++ b/drivers/irqchip/irq-bcm2836.c
+@@ -175,6 +175,7 @@ __exception_irq_entry bcm2836_arm_irqchi
+ 		u32 ipi = ffs(mbox_val) - 1;
+ 
+ 		writel(1 << ipi, mailbox0);
++		dsb(sy);
+ 		handle_IPI(ipi, regs);
+ #endif
+ 	} else if (stat) {