Add chip entry for BCM283x

Chips used in the Raspberry Pi:
Pi 1: BCM2835
Pi 2: BCM2836
Pi 3: BCM2837

Makefile

@@ -45,6 +45,7 @@ CONFIG_PLATFORM_JB_X86 = n
 CONFIG_PLATFORM_ARM_S3C2K4 = n
 CONFIG_PLATFORM_ARM_PXA2XX = n
 CONFIG_PLATFORM_ARM_S3C6K4 = n
+CONFIG_PLATFORM_ARM_BCM283x = n
 CONFIG_PLATFORM_MIPS_RMI = n
 CONFIG_PLATFORM_RTD2880B = n
 CONFIG_PLATFORM_MIPS_AR9132 = n
@@ -316,6 +317,16 @@ KVER  := 2.6.34.1
 KSRC ?= /usr/src/linux-2.6.34.1
 endif
 
+ifeq ($(CONFIG_PLATFORM_ARM_BCM283x), y)
+EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
+ARCH := arm
+CROSS_COMPILE ?=
+KVER  := $(shell uname -r)
+KSRC := /lib/modules/$(KVER)/build
+MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
+INSTALL_PREFIX :=
+endif
+
 ifeq ($(CONFIG_PLATFORM_RTD2880B), y)
 EXTRA_CFLAGS += -DCONFIG_BIG_ENDIAN -DCONFIG_PLATFORM_RTD2880B
 ARCH:=